121340412999 has 12 divisors (see below), whose sum is σ = 188751753736. Its totient is φ = 74671023312.

The previous prime is 121340412997. The next prime is 121340413027. The reversal of 121340412999 is 999214043121.

121340412999 is a `hidden beast` number, since 1 + 213 + 404 + 1 + 29 + 9 + 9 = 666.

It is not a de Polignac number, because 121340412999 - 2¹ = 121340412997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340412997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518548657 + ... + 518548890.

Almost surely, 2^121340412999 is an apocalyptic number.

121340412999 is a deficient number, since it is larger than the sum of its proper divisors (67411340737).

121340412999 is a wasteful number, since it uses less digits than its factorization.

121340412999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037097566 (or 1037097563 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 121340412999 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twelve thousand, nine hundred ninety-nine".