20022233231 has 64 divisors (see below), whose sum is σ = 28402375680. Its totient is φ = 13593277440.

The previous prime is 20022233201. The next prime is 20022233237. The reversal of 20022233231 is 13233222002.

It is a cyclic number.

It is not a de Polignac number, because 20022233231 - 2¹⁴ = 20022216847 is a prime.

It is a super-2 number, since 2×20022233231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022233237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5570771 + ... + 5574363.

It is an arithmetic number, because the mean of its divisors is an integer number (443787120).

Almost surely, 2^20022233231 is an apocalyptic number.

20022233231 is a deficient number, since it is larger than the sum of its proper divisors (8380142449).

20022233231 is a wasteful number, since it uses less digits than its factorization.

20022233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20022233231 its reverse (13233222002), we get a palindrome (33255455233).

The spelling of 20022233231 in words is "twenty billion, twenty-two million, two hundred thirty-three thousand, two hundred thirty-one".