121194857 has 16 divisors (see below), whose sum is σ = 145031040. Its totient is φ = 99076992.

The previous prime is 121194851. The next prime is 121194859. The reversal of 121194857 is 758491121.

It is not a de Polignac number, because 121194857 - 2⁶ = 121194793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121194857.

It is not an unprimeable number, because it can be changed into a prime (121194851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13253 + ... + 20445.

It is an arithmetic number, because the mean of its divisors is an integer number (9064440).

Almost surely, 2^121194857 is an apocalyptic number.

It is an amenable number.

121194857 is a deficient number, since it is larger than the sum of its proper divisors (23836183).

121194857 is an equidigital number, since it uses as much as digits as its factorization.

121194857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7312.

The product of its digits is 20160, while the sum is 38.

The square root of 121194857 is about 11008.8535733745. The cubic root of 121194857 is about 494.8741059971.

The spelling of 121194857 in words is "one hundred twenty-one million, one hundred ninety-four thousand, eight hundred fifty-seven".