121161684 has 36 divisors (see below), whose sum is σ = 323367072. Its totient is φ = 34588800.

The previous prime is 121161647. The next prime is 121161697. The reversal of 121161684 is 486161121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100284 + ... + 101484.

Almost surely, 2^121161684 is an apocalyptic number.

121161684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121161684 is an abundant number, since it is smaller than the sum of its proper divisors (202205388).

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

121161684 is an equidigital number, since it uses as much as digits as its factorization.

121161684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 1213 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 121161684 is about 11007.3468192839. The cubic root of 121161684 is about 494.8289501844.

The spelling of 121161684 in words is "one hundred twenty-one million, one hundred sixty-one thousand, six hundred eighty-four".