20321113020 has 48 divisors (see below), whose sum is σ = 61275973920. Its totient is φ = 5002119936.

The previous prime is 20321112971. The next prime is 20321113051. The reversal of 20321113020 is 2031112302.

It is a super-2 number, since 2×20321113020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13025575 + ... + 13027134.

It is an arithmetic number, because the mean of its divisors is an integer number (1276582790).

Almost surely, 2^20321113020 is an apocalyptic number.

20321113020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321113020 is an abundant number, since it is smaller than the sum of its proper divisors (40954860900).

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

20321113020 is a wasteful number, since it uses less digits than its factorization.

20321113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26052734 (or 26052732 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20321113020 its reverse (2031112302), we get a palindrome (22352225322).

The spelling of 20321113020 in words is "twenty billion, three hundred twenty-one million, one hundred thirteen thousand, twenty".