122151644 has 24 divisors (see below), whose sum is σ = 219769200. Its totient is φ = 59381504.

The previous prime is 122151641. The next prime is 122151661. The reversal of 122151644 is 446151221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122151641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21407 + ... + 26505.

It is an arithmetic number, because the mean of its divisors is an integer number (9157050).

Almost surely, 2^122151644 is an apocalyptic number.

It is an amenable number.

122151644 is a deficient number, since it is larger than the sum of its proper divisors (97617556).

122151644 is a wasteful number, since it uses less digits than its factorization.

122151644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5269 (or 5267 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 122151644 is about 11052.2234867017. The cubic root of 122151644 is about 496.1729744862.

The spelling of 122151644 in words is "one hundred twenty-two million, one hundred fifty-one thousand, six hundred forty-four".