121497152772 has 48 divisors (see below), whose sum is σ = 301767076800. Its totient is φ = 37936419840.

The previous prime is 121497152731. The next prime is 121497152773. The reversal of 121497152772 is 277251794121.

It is not an unprimeable number, because it can be changed into a prime (121497152773) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2973429 + ... + 3014012.

It is an arithmetic number, because the mean of its divisors is an integer number (6286814100).

Almost surely, 2^121497152772 is an apocalyptic number.

121497152772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121497152772 is an abundant number, since it is smaller than the sum of its proper divisors (180269924028).

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

121497152772 is a wasteful number, since it uses less digits than its factorization.

121497152772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987556 (or 5987554 counting only the distinct ones).

The product of its digits is 493920, while the sum is 48.

The spelling of 121497152772 in words is "one hundred twenty-one billion, four hundred ninety-seven million, one hundred fifty-two thousand, seven hundred seventy-two".