20110231022 has 48 divisors (see below), whose sum is σ = 37309349088. Its totient is φ = 8077870080.

The previous prime is 20110230997. The next prime is 20110231049. The reversal of 20110231022 is 22013201102.

It is a happy number.

It is a super-2 number, since 2×20110231022² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20110230988 and 20110231006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376463 + ... + 426549.

It is an arithmetic number, because the mean of its divisors is an integer number (777278106).

Almost surely, 2^20110231022 is an apocalyptic number.

20110231022 is a deficient number, since it is larger than the sum of its proper divisors (17199118066).

20110231022 is a wasteful number, since it uses less digits than its factorization.

20110231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50361 (or 50354 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20110231022 its reverse (22013201102), we get a palindrome (42123432124).

The spelling of 20110231022 in words is "twenty billion, one hundred ten million, two hundred thirty-one thousand, twenty-two".