121751166 has 32 divisors (see below), whose sum is σ = 247587840. Its totient is φ = 39907296.

The previous prime is 121751159. The next prime is 121751171. The reversal of 121751166 is 661157121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187855 + ... + 188501.

It is an arithmetic number, because the mean of its divisors is an integer number (7737120).

Almost surely, 2^121751166 is an apocalyptic number.

121751166 is an abundant number, since it is smaller than the sum of its proper divisors (125836674).

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

121751166 is a wasteful number, since it uses less digits than its factorization.

121751166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its digits is 2520, while the sum is 30.

The square root of 121751166 is about 11034.0910817339. The cubic root of 121751166 is about 495.6301412631.

The spelling of 121751166 in words is "one hundred twenty-one million, seven hundred fifty-one thousand, one hundred sixty-six".