121253995 has 16 divisors (see below), whose sum is σ = 149878080. Its totient is φ = 94103424.

The previous prime is 121253981. The next prime is 121254011. The reversal of 121253995 is 599352121.

It is a cyclic number.

It is not a de Polignac number, because 121253995 - 2⁵ = 121253963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80469 + ... + 81961.

It is an arithmetic number, because the mean of its divisors is an integer number (9367380).

Almost surely, 2^121253995 is an apocalyptic number.

121253995 is a deficient number, since it is larger than the sum of its proper divisors (28624085).

121253995 is a wasteful number, since it uses less digits than its factorization.

121253995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974.

The product of its digits is 24300, while the sum is 37.

The square root of 121253995 is about 11011.5391748838. The cubic root of 121253995 is about 494.9545855012.

The spelling of 121253995 in words is "one hundred twenty-one million, two hundred fifty-three thousand, nine hundred ninety-five".