121050891 has 24 divisors (see below), whose sum is σ = 192688496. Its totient is φ = 72757440.

The previous prime is 121050847. The next prime is 121050893. The reversal of 121050891 is 198050121.

It is not a de Polignac number, because 121050891 - 2⁶ = 121050827 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121050893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7000 + ... + 17061.

Almost surely, 2^121050891 is an apocalyptic number.

121050891 is a deficient number, since it is larger than the sum of its proper divisors (71637605).

121050891 is a wasteful number, since it uses less digits than its factorization.

121050891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24123 (or 24120 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 121050891 is about 11002.3129840957. The cubic root of 121050891 is about 494.6780765716.

The spelling of 121050891 in words is "one hundred twenty-one million, fifty thousand, eight hundred ninety-one".