121903563012 has 48 divisors (see below), whose sum is σ = 354628549632. Its totient is φ = 31663262880.

The previous prime is 121903563007. The next prime is 121903563037. The reversal of 121903563012 is 210365309121.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 65964208 + ... + 65966055.

It is an arithmetic number, because the mean of its divisors is an integer number (7388094784).

Almost surely, 2^121903563012 is an apocalyptic number.

121903563012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121903563012 is an abundant number, since it is smaller than the sum of its proper divisors (232724986620).

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

121903563012 is a wasteful number, since it uses less digits than its factorization.

121903563012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131930288 (or 131930286 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 121903563012 in words is "one hundred twenty-one billion, nine hundred three million, five hundred sixty-three thousand, twelve".