121496816 has 20 divisors (see below), whose sum is σ = 269028912. Its totient is φ = 52070016.

The previous prime is 121496803. The next prime is 121496827. The reversal of 121496816 is 618694121.

It is a super-2 number, since 2×121496816² = 29522952596275712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121496816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542285 + ... + 542508.

Almost surely, 2^121496816 is an apocalyptic number.

121496816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121496816 is an abundant number, since it is smaller than the sum of its proper divisors (147532096).

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

121496816 is a wasteful number, since it uses less digits than its factorization.

121496816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084808 (or 1084802 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 121496816 is about 11022.5594124051. The cubic root of 121496816 is about 495.2847608205.

The spelling of 121496816 in words is "one hundred twenty-one million, four hundred ninety-six thousand, eight hundred sixteen".