20021202230031 has 96 divisors (see below), whose sum is σ = 29997743300928. Its totient is φ = 12862965473280.

The previous prime is 20021202230021. The next prime is 20021202230039. The reversal of 20021202230031 is 13003220212002.

20021202230031 is a `hidden beast` number, since 200 + 2 + 1 + 202 + 230 + 0 + 31 = 666.

It is not a de Polignac number, because 20021202230031 - 2²³ = 20021193841423 is a prime.

It is a super-2 number, since 2×20021202230031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021202229986 and 20021202230013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021202230039) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1512054571 + ... + 1512067811.

It is an arithmetic number, because the mean of its divisors is an integer number (312476492718).

Almost surely, 2^{20021202230031} is an apocalyptic number.

20021202230031 is a deficient number, since it is larger than the sum of its proper divisors (9976541070897).

20021202230031 is a wasteful number, since it uses less digits than its factorization.

20021202230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13721 (or 13718 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20021202230031 its reverse (13003220212002), we get a palindrome (33024422442033).

The spelling of 20021202230031 in words is "twenty trillion, twenty-one billion, two hundred two million, two hundred thirty thousand, thirty-one".