121107699504 has 400 divisors, whose sum is σ = 403964335104. Its totient is φ = 34684070400.

The previous prime is 121107699463. The next prime is 121107699523. The reversal of 121107699504 is 405996701121.

121107699504 is a `hidden beast` number, since 121 + 10 + 7 + 6 + 9 + 9 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 121107699504.

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 79 ways as a sum of consecutive naturals, for example, 19000062 + ... + 19006434.

Almost surely, 2^121107699504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121107699504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201982167552).

121107699504 is an abundant number, since it is smaller than the sum of its proper divisors (282856635600).

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

121107699504 is a wasteful number, since it uses less digits than its factorization.

121107699504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478 (or 6463 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 121107699504 in words is "one hundred twenty-one billion, one hundred seven million, six hundred ninety-nine thousand, five hundred four".