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13201112232020 = 225660055611601
BaseRepresentation
bin1100000000011001111110…
…0110101111000001010100
31201202000101012122110021102
43000012133212233001110
53212241334212411040
644024301321405232
72531514603355346
oct300063746570124
951660335573242
1013201112232020
11422a618780309
121592569939818
13749b2354ba3b
14338d19b0b296
1517d5d05ab515
hexc019f9af054

13201112232020 has 12 divisors (see below), whose sum is σ = 27722335687284. Its totient is φ = 5280444892800.

The previous prime is 13201112231977. The next prime is 13201112232167. The reversal of 13201112232020 is 2023221110231.

It can be written as a sum of positive squares in 2 ways, for example, as 4498624032016 + 8702488200004 = 2120996^2 + 2949998^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 660055611601 = 13201112232020 / (1 + 3 + 2 + 0 + 1 + 1 + 1 + 2 + 2 + 3 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 13201112231983 and 13201112232001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330027805781 + ... + 330027805820.

It is an arithmetic number, because the mean of its divisors is an integer number (2310194640607).

Almost surely, 213201112232020 is an apocalyptic number.

13201112232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13201112232020 is an abundant number, since it is smaller than the sum of its proper divisors (14521223455264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13201112232020 is a wasteful number, since it uses less digits than its factorization.

13201112232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660055611610 (or 660055611608 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13201112232020 its reverse (2023221110231), we get a palindrome (15224333342251).

The spelling of 13201112232020 in words is "thirteen trillion, two hundred one billion, one hundred twelve million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 660055611601 1320111223202 2640222446404 3300278058005 6600556116010 13201112232020