121251051 has 6 divisors (see below), whose sum is σ = 175140420. Its totient is φ = 80834028.

The previous prime is 121251047. The next prime is 121251071. The reversal of 121251051 is 150152121.

It is not a de Polignac number, because 121251051 - 2² = 121251047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121251041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6736161 + ... + 6736178.

It is an arithmetic number, because the mean of its divisors is an integer number (29190070).

Almost surely, 2^121251051 is an apocalyptic number.

121251051 is a deficient number, since it is larger than the sum of its proper divisors (53889369).

121251051 is a wasteful number, since it uses less digits than its factorization.

121251051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472345 (or 13472342 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 121251051 is about 11011.4054961208. The cubic root of 121251051 is about 494.9505797003.

The spelling of 121251051 in words is "one hundred twenty-one million, two hundred fifty-one thousand, fifty-one".