121151886 has 16 divisors (see below), whose sum is σ = 243393024. Its totient is φ = 40202424.

The previous prime is 121151881. The next prime is 121151887. The reversal of 121151886 is 688151121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121151881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43936 + ... + 46611.

It is an arithmetic number, because the mean of its divisors is an integer number (15212064).

Almost surely, 2^121151886 is an apocalyptic number.

121151886 is an abundant number, since it is smaller than the sum of its proper divisors (122241138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121151886 is a wasteful number, since it uses less digits than its factorization.

121151886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90775.

The product of its digits is 3840, while the sum is 33.

The square root of 121151886 is about 11006.9017439060. The cubic root of 121151886 is about 494.8156113560.

The spelling of 121151886 in words is "one hundred twenty-one million, one hundred fifty-one thousand, eight hundred eighty-six".