121251201 has 4 divisors (see below), whose sum is σ = 161668272. Its totient is φ = 80834132.

The previous prime is 121251139. The next prime is 121251209. The reversal of 121251201 is 102152121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121251201 - 2²² = 117056897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121251209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20208531 + ... + 20208536.

It is an arithmetic number, because the mean of its divisors is an integer number (40417068).

Almost surely, 2^121251201 is an apocalyptic number.

It is an amenable number.

121251201 is a deficient number, since it is larger than the sum of its proper divisors (40417071).

121251201 is an equidigital number, since it uses as much as digits as its factorization.

121251201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40417070.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121251201 is about 11011.4123072383. The cubic root of 121251201 is about 494.9507838018.

The spelling of 121251201 in words is "one hundred twenty-one million, two hundred fifty-one thousand, two hundred one".