122117655 has 32 divisors (see below), whose sum is σ = 224375040. Its totient is φ = 56090880.

The previous prime is 122117621. The next prime is 122117663. The reversal of 122117655 is 556711221.

It is not a de Polignac number, because 122117655 - 2⁸ = 122117399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16342 + ... + 22611.

It is an arithmetic number, because the mean of its divisors is an integer number (7011720).

Almost surely, 2^122117655 is an apocalyptic number.

122117655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122117655 is a deficient number, since it is larger than the sum of its proper divisors (102257385).

122117655 is a wasteful number, since it uses less digits than its factorization.

122117655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38991.

The product of its digits is 4200, while the sum is 30.

The square root of 122117655 is about 11050.6857253294. The cubic root of 122117655 is about 496.1269497607.

Adding to 122117655 its reverse (556711221), we get a palindrome (678828876).

The spelling of 122117655 in words is "one hundred twenty-two million, one hundred seventeen thousand, six hundred fifty-five".