121406611620 has 96 divisors (see below), whose sum is σ = 395086003200. Its totient is φ = 27279736704.

The previous prime is 121406611603. The next prime is 121406611643. The reversal of 121406611620 is 26116604121.

121406611620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2424910 + ... + 2474469.

It is an arithmetic number, because the mean of its divisors is an integer number (4115479200).

Almost surely, 2^121406611620 is an apocalyptic number.

121406611620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121406611620 is an abundant number, since it is smaller than the sum of its proper divisors (273679391580).

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

121406611620 is a wasteful number, since it uses less digits than its factorization.

121406611620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899457 (or 4899455 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 121406611620 in words is "one hundred twenty-one billion, four hundred six million, six hundred eleven thousand, six hundred twenty".