121185966 has 16 divisors (see below), whose sum is σ = 264405888. Its totient is φ = 36723000.

The previous prime is 121185947. The next prime is 121185973. The reversal of 121185966 is 669581121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918010 + ... + 918141.

It is an arithmetic number, because the mean of its divisors is an integer number (16525368).

Almost surely, 2^121185966 is an apocalyptic number.

121185966 is an abundant number, since it is smaller than the sum of its proper divisors (143219922).

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

121185966 is a wasteful number, since it uses less digits than its factorization.

121185966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836167.

The product of its digits is 25920, while the sum is 39.

The square root of 121185966 is about 11008.4497546203. The cubic root of 121185966 is about 494.8620041819.

The spelling of 121185966 in words is "one hundred twenty-one million, one hundred eighty-five thousand, nine hundred sixty-six".