122442042013551 has 24 divisors (see below), whose sum is σ = 190498232944656. Its totient is φ = 75335959555200.

The previous prime is 122442042013549. The next prime is 122442042013561. The reversal of 122442042013551 is 155310240244221.

122442042013551 is a `hidden beast` number, since 1 + 2 + 2 + 44 + 20 + 42 + 0 + 1 + 3 + 551 = 666.

It is not a de Polignac number, because 122442042013551 - 2¹ = 122442042013549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122442042013561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89522385 + ... + 90879818.

It is an arithmetic number, because the mean of its divisors is an integer number (7937426372694).

Almost surely, 2^{122442042013551} is an apocalyptic number.

122442042013551 is a deficient number, since it is larger than the sum of its proper divisors (68056190931105).

122442042013551 is a wasteful number, since it uses less digits than its factorization.

122442042013551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180408023 (or 180408020 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 122442042013551 its reverse (155310240244221), we get a palindrome (277752282257772).

The spelling of 122442042013551 in words is "one hundred twenty-two trillion, four hundred forty-two billion, forty-two million, thirteen thousand, five hundred fifty-one".