122400554122251 has 12 divisors (see below), whose sum is σ = 179797424135160. Its totient is φ = 80217312305760.

The previous prime is 122400554122247. The next prime is 122400554122267. The reversal of 122400554122251 is 152221455004221.

It is a happy number.

122400554122251 is a `hidden beast` number, since 1 + 2 + 2 + 40 + 0 + 5 + 541 + 2 + 22 + 51 = 666.

122400554122251 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 122400554122251 - 2² = 122400554122247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122400554122051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115254758530 + ... + 115254759591.

It is an arithmetic number, because the mean of its divisors is an integer number (14983118677930).

Almost surely, 2^{122400554122251} is an apocalyptic number.

122400554122251 is a deficient number, since it is larger than the sum of its proper divisors (57396870012909).

122400554122251 is a wasteful number, since it uses less digits than its factorization.

122400554122251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230509518186 (or 230509518183 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The spelling of 122400554122251 in words is "one hundred twenty-two trillion, four hundred billion, five hundred fifty-four million, one hundred twenty-two thousand, two hundred fifty-one".