20002232331021 has 16 divisors (see below), whose sum is σ = 26726004711936. Its totient is φ = 13306666067376.

The previous prime is 20002232331013. The next prime is 20002232331023. The reversal of 20002232331021 is 12013323220002.

It is a happy number.

It is not a de Polignac number, because 20002232331021 - 2³ = 20002232331013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002232331023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1695 + ... + 6324908.

It is an arithmetic number, because the mean of its divisors is an integer number (1670375294496).

Almost surely, 2^{20002232331021} is an apocalyptic number.

It is an amenable number.

20002232331021 is a deficient number, since it is larger than the sum of its proper divisors (6723772380915).

20002232331021 is a wasteful number, since it uses less digits than its factorization.

20002232331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6328832.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20002232331021 its reverse (12013323220002), we get a palindrome (32015555551023).

The spelling of 20002232331021 in words is "twenty trillion, two billion, two hundred thirty-two million, three hundred thirty-one thousand, twenty-one".