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13013002030221 = 321817988337649
BaseRepresentation
bin1011110101011101001101…
…0111010000110010001101
31201002000211111010002200100
42331113103113100302031
53201201112004431341
643402031323121313
72512105215133134
oct275272327206215
951060744102610
1013013002030221
114167868441516
121562010073239
137351755bb21b
1432db92b5c91b
15178770d8a3b6
hexbd5d35d0c8d

13013002030221 has 12 divisors (see below), whose sum is σ = 18900406879900. Its totient is φ = 8627404659840.

The previous prime is 13013002030183. The next prime is 13013002030267. The reversal of 13013002030221 is 12203020031031.

It can be written as a sum of positive squares in 2 ways, for example, as 520410746025 + 12492591284196 = 721395^2 + 3534486^2 .

It is not a de Polignac number, because 13013002030221 - 26 = 13013002030157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013002030194 and 13013002030203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013002030421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3994167196 + ... + 3994170453.

Almost surely, 213013002030221 is an apocalyptic number.

It is an amenable number.

13013002030221 is a deficient number, since it is larger than the sum of its proper divisors (5887404849679).

13013002030221 is a wasteful number, since it uses less digits than its factorization.

13013002030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7988337836 (or 7988337833 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13013002030221 its reverse (12203020031031), we get a palindrome (25216022061252).

The spelling of 13013002030221 in words is "thirteen trillion, thirteen billion, two million, thirty thousand, two hundred twenty-one".

Divisors: 1 3 9 181 543 1629 7988337649 23965012947 71895038841 1445889114469 4337667343407 13013002030221