121956051 has 32 divisors (see below), whose sum is σ = 197913600. Its totient is φ = 66646272.

The previous prime is 121956047. The next prime is 121956071. The reversal of 121956051 is 150659121.

It is not a de Polignac number, because 121956051 - 2² = 121956047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121956071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21091 + ... + 26243.

It is an arithmetic number, because the mean of its divisors is an integer number (6184800).

Almost surely, 2^121956051 is an apocalyptic number.

121956051 is a deficient number, since it is larger than the sum of its proper divisors (75957549).

121956051 is an equidigital number, since it uses as much as digits as its factorization.

121956051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200 (or 5186 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 121956051 is about 11043.3713602323. The cubic root of 121956051 is about 495.9080038255.

The spelling of 121956051 in words is "one hundred twenty-one million, nine hundred fifty-six thousand, fifty-one".