121903355392 has 160 divisors (see below), whose sum is σ = 303580569600. Its totient is φ = 47613616128.

The previous prime is 121903355383. The next prime is 121903355407. The reversal of 121903355392 is 293553309121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3664209 + ... + 3697327.

It is an arithmetic number, because the mean of its divisors is an integer number (1897378560).

Almost surely, 2^121903355392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121903355392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151790284800).

121903355392 is an abundant number, since it is smaller than the sum of its proper divisors (181677214208).

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

121903355392 is an equidigital number, since it uses as much as digits as its factorization.

121903355392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33236 (or 33220 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 43.

The spelling of 121903355392 in words is "one hundred twenty-one billion, nine hundred three million, three hundred fifty-five thousand, three hundred ninety-two".