122311231432551 has 96 divisors (see below), whose sum is σ = 209798584020480. Its totient is φ = 69755466128256.

The previous prime is 122311231432471. The next prime is 122311231432561. The reversal of 122311231432551 is 155234132113221.

122311231432551 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 1 + 12 + 314 + 325 + 5 + 1 = 666.

It is not a de Polignac number, because 122311231432551 - 2²² = 122311227238247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122311231432561) 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, 1977931005 + ... + 1977992841.

It is an arithmetic number, because the mean of its divisors is an integer number (2185401916880).

Almost surely, 2^{122311231432551} is an apocalyptic number.

122311231432551 is a deficient number, since it is larger than the sum of its proper divisors (87487352587929).

122311231432551 is an equidigital number, since it uses as much as digits as its factorization.

122311231432551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64115 (or 64103 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 122311231432551 its reverse (155234132113221), we get a palindrome (277545363545772).

The spelling of 122311231432551 in words is "one hundred twenty-two trillion, three hundred eleven billion, two hundred thirty-one million, four hundred thirty-two thousand, five hundred fifty-one".