121032216012 has 24 divisors (see below), whose sum is σ = 282629689776. Its totient is φ = 40312474048.

The previous prime is 121032215987. The next prime is 121032216031. The reversal of 121032216012 is 210612230121.

It is a self number, because there is not a number n which added to its sum of digits gives 121032216012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3933783 + ... + 3964430.

It is an arithmetic number, because the mean of its divisors is an integer number (11776237074).

Almost surely, 2^121032216012 is an apocalyptic number.

121032216012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121032216012 is an abundant number, since it is smaller than the sum of its proper divisors (161597473764).

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

121032216012 is a wasteful number, since it uses less digits than its factorization.

121032216012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899497 (or 7899495 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121032216012 its reverse (210612230121), we get a palindrome (331644446133).

The spelling of 121032216012 in words is "one hundred twenty-one billion, thirty-two million, two hundred sixteen thousand, twelve".