122554420105215 has 64 divisors (see below), whose sum is σ = 228373640027136. Its totient is φ = 54956769933312.

The previous prime is 122554420105171. The next prime is 122554420105231. The reversal of 122554420105215 is 512501024455221.

It is not a de Polignac number, because 122554420105215 - 2²⁷ = 122554285887487 is a prime.

It is a super-2 number, since 2×122554420105215² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25544679 + ... + 29960631.

It is an arithmetic number, because the mean of its divisors is an integer number (3568338125424).

Almost surely, 2^{122554420105215} is an apocalyptic number.

122554420105215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122554420105215 is a deficient number, since it is larger than the sum of its proper divisors (105819219921921).

122554420105215 is a wasteful number, since it uses less digits than its factorization.

122554420105215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421008.

The product of its (nonzero) digits is 160000, while the sum is 39.

The spelling of 122554420105215 in words is "one hundred twenty-two trillion, five hundred fifty-four billion, four hundred twenty million, one hundred five thousand, two hundred fifteen".