122320145002155 has 32 divisors (see below), whose sum is σ = 196574144065536. Its totient is φ = 64950506532864.

The previous prime is 122320145002117. The next prime is 122320145002157. The reversal of 122320145002155 is 551200541023221.

It is not a de Polignac number, because 122320145002155 - 2⁶ = 122320145002091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122320145002157) 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 31 ways as a sum of consecutive naturals, for example, 7601227 + ... + 17390196.

It is an arithmetic number, because the mean of its divisors is an integer number (6142942002048).

Almost surely, 2^{122320145002155} is an apocalyptic number.

122320145002155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122320145002155 is a deficient number, since it is larger than the sum of its proper divisors (74253999063381).

122320145002155 is a wasteful number, since it uses less digits than its factorization.

122320145002155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24992867.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 122320145002155 its reverse (551200541023221), we get a palindrome (673520686025376).

The spelling of 122320145002155 in words is "one hundred twenty-two trillion, three hundred twenty billion, one hundred forty-five million, two thousand, one hundred fifty-five".