122153913 has 36 divisors (see below), whose sum is σ = 212874480. Its totient is φ = 69795432.

The previous prime is 122153881. The next prime is 122153917. The reversal of 122153913 is 319351221.

122153913 is a `hidden beast` number, since 122 + 1 + 539 + 1 + 3 = 666.

It is not a de Polignac number, because 122153913 - 2⁵ = 122153881 is a prime.

It is a super-2 number, since 2×122153913² = 29843156922423138, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122153917) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6778 + ... + 17036.

It is an arithmetic number, because the mean of its divisors is an integer number (5913180).

Almost surely, 2^122153913 is an apocalyptic number.

It is an amenable number.

122153913 is a deficient number, since it is larger than the sum of its proper divisors (90720567).

122153913 is an equidigital number, since it uses as much as digits as its factorization.

122153913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10288 (or 10269 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 122153913 is about 11052.3261352532. The cubic root of 122153913 is about 496.1760466498.

The spelling of 122153913 in words is "one hundred twenty-two million, one hundred fifty-three thousand, nine hundred thirteen".