121754220 has 72 divisors (see below), whose sum is σ = 396580464. Its totient is φ = 27828864.

The previous prime is 121754219. The next prime is 121754251. The reversal of 121754220 is 22457121.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17767 + ... + 23646.

It is an arithmetic number, because the mean of its divisors is an integer number (5508062).

Almost surely, 2^121754220 is an apocalyptic number.

121754220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121754220 is an abundant number, since it is smaller than the sum of its proper divisors (274826244).

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

121754220 is a wasteful number, since it uses less digits than its factorization.

121754220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41439 (or 41430 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 121754220 is about 11034.2294701533. The cubic root of 121754220 is about 495.6342853487.

The spelling of 121754220 in words is "one hundred twenty-one million, seven hundred fifty-four thousand, two hundred twenty".