122251887 has 12 divisors (see below), whose sum is σ = 178237800. Its totient is φ = 80738928.

The previous prime is 122251819. The next prime is 122251891. The reversal of 122251887 is 788152221.

It is not a de Polignac number, because 122251887 - 2¹² = 122247791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122251807) 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, 62512 + ... + 64437.

It is an arithmetic number, because the mean of its divisors is an integer number (14853150).

Almost surely, 2^122251887 is an apocalyptic number.

122251887 is a deficient number, since it is larger than the sum of its proper divisors (55985913).

122251887 is a wasteful number, since it uses less digits than its factorization.

122251887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127062 (or 127059 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 122251887 is about 11056.7575265084. The cubic root of 122251887 is about 496.3086644815.

The spelling of 122251887 in words is "one hundred twenty-two million, two hundred fifty-one thousand, eight hundred eighty-seven".