122211320231 has 96 divisors (see below), whose sum is σ = 177000230400. Its totient is φ = 81857952000.

The previous prime is 122211320227. The next prime is 122211320237. The reversal of 122211320231 is 132023112221.

It is not a de Polignac number, because 122211320231 - 2² = 122211320227 is a prime.

It is a super-2 number, since 2×122211320231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211320237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12338381 + ... + 12348281.

It is an arithmetic number, because the mean of its divisors is an integer number (1843752400).

Almost surely, 2^122211320231 is an apocalyptic number.

122211320231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122211320231 is a deficient number, since it is larger than the sum of its proper divisors (54788910169).

122211320231 is a wasteful number, since it uses less digits than its factorization.

122211320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021 (or 10010 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 122211320231 its reverse (132023112221), we get a palindrome (254234432452).

The spelling of 122211320231 in words is "one hundred twenty-two billion, two hundred eleven million, three hundred twenty thousand, two hundred thirty-one".