121825910 has 32 divisors (see below), whose sum is σ = 244412640. Its totient is φ = 43448832.

The previous prime is 121825909. The next prime is 121825919. The reversal of 121825910 is 19528121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121825919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15629 + ... + 22088.

It is an arithmetic number, because the mean of its divisors is an integer number (7637895).

Almost surely, 2^121825910 is an apocalyptic number.

121825910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121825910 is an abundant number, since it is smaller than the sum of its proper divisors (122586730).

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

121825910 is a wasteful number, since it uses less digits than its factorization.

121825910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37760.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 121825910 is about 11037.4775197959. The cubic root of 121825910 is about 495.7315442647.

The spelling of 121825910 in words is "one hundred twenty-one million, eight hundred twenty-five thousand, nine hundred ten".