20332131021 has 48 divisors (see below), whose sum is σ = 31120065600. Its totient is φ = 12756248064.

The previous prime is 20332131011. The next prime is 20332131041. The reversal of 20332131021 is 12013123302.

20332131021 is a `hidden beast` number, since 2 + 0 + 332 + 1 + 310 + 21 = 666.

It is not a de Polignac number, because 20332131021 - 2¹⁰ = 20332129997 is a prime.

It is a super-2 number, since 2×20332131021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20332130985 and 20332131003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332131011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22416450 + ... + 22417356.

It is an arithmetic number, because the mean of its divisors is an integer number (648334700).

Almost surely, 2^20332131021 is an apocalyptic number.

It is an amenable number.

20332131021 is a deficient number, since it is larger than the sum of its proper divisors (10787934579).

20332131021 is a wasteful number, since it uses less digits than its factorization.

20332131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658 (or 1655 counting only the distinct ones).

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

Adding to 20332131021 its reverse (12013123302), we get a palindrome (32345254323).

The spelling of 20332131021 in words is "twenty billion, three hundred thirty-two million, one hundred thirty-one thousand, twenty-one".