121086400 has 42 divisors (see below), whose sum is σ = 297952160. Its totient is φ = 48433920.

The previous prime is 121086389. The next prime is 121086401. The reversal of 121086400 is 4680121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121086401) 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 5 ways as a sum of consecutive naturals, for example, 36240 + ... + 39439.

Almost surely, 2^121086400 is an apocalyptic number.

121086400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121086400 is an abundant number, since it is smaller than the sum of its proper divisors (176865760).

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

121086400 is an equidigital number, since it uses as much as digits as its factorization.

121086400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75701 (or 75686 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 121086400 is about 11003.9265719106. The cubic root of 121086400 is about 494.7264413720.

The spelling of 121086400 in words is "one hundred twenty-one million, eighty-six thousand, four hundred".