121297733637696 has 420 divisors, whose sum is σ = 451684323862464. Its totient is φ = 31505903700480.

The previous prime is 121297733637677. The next prime is 121297733637719. The reversal of 121297733637696 is 696736337792121.

121297733637696 is a `hidden beast` number, since 1 + 2 + 12 + 97 + 73 + 3 + 6 + 376 + 96 = 666.

121297733637696 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9421716 + ... + 18203411.

Almost surely, 2^{121297733637696} is an apocalyptic number.

121297733637696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121297733637696 is an abundant number, since it is smaller than the sum of its proper divisors (330386590224768).

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

121297733637696 is a wasteful number, since it uses less digits than its factorization.

121297733637696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27625180 (or 27625150 counting only the distinct ones).

The product of its digits is 648121824, while the sum is 72.

The spelling of 121297733637696 in words is "one hundred twenty-one trillion, two hundred ninety-seven billion, seven hundred thirty-three million, six hundred thirty-seven thousand, six hundred ninety-six".