13233220020 has 96 divisors (see below), whose sum is σ = 41191113600. Its totient is φ = 3527050752.

The previous prime is 13233219977. The next prime is 13233220027. The reversal of 13233220020 is 2002233231.

It is a happy number.

13233220020 is a `hidden beast` number, since 1 + 323 + 322 + 0 + 0 + 20 = 666.

It is a super-2 number, since 2×13233220020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13233219975 and 13233220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13233220027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1300111 + ... + 1310249.

It is an arithmetic number, because the mean of its divisors is an integer number (429074100).

Almost surely, 2^13233220020 is an apocalyptic number.

13233220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13233220020 is an abundant number, since it is smaller than the sum of its proper divisors (27957893580).

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

13233220020 is a wasteful number, since it uses less digits than its factorization.

13233220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12574 (or 12566 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 13233220020 its reverse (2002233231), we get a palindrome (15235453251).

The spelling of 13233220020 in words is "thirteen billion, two hundred thirty-three million, two hundred twenty thousand, twenty".