121154201 has 4 divisors (see below), whose sum is σ = 138461952. Its totient is φ = 103846452.

The previous prime is 121154197. The next prime is 121154227. The reversal of 121154201 is 102451121.

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 121154201 - 2² = 121154197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121154201.

It is not an unprimeable number, because it can be changed into a prime (121154251) 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, 8653865 + ... + 8653878.

It is an arithmetic number, because the mean of its divisors is an integer number (34615488).

Almost surely, 2^121154201 is an apocalyptic number.

It is an amenable number.

121154201 is a deficient number, since it is larger than the sum of its proper divisors (17307751).

121154201 is an equidigital number, since it uses as much as digits as its factorization.

121154201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17307750.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 121154201 is about 11007.0069046948. The cubic root of 121154201 is about 494.8187630220.

The spelling of 121154201 in words is "one hundred twenty-one million, one hundred fifty-four thousand, two hundred one".