121343440104 has 48 divisors (see below), whose sum is σ = 328703094720. Its totient is φ = 40439861280.

The previous prime is 121343440061. The next prime is 121343440133. The reversal of 121343440104 is 401044343121.

121343440104 is a `hidden beast` number, since 1 + 213 + 4 + 3 + 440 + 1 + 0 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208939 + ... + 535109.

It is an arithmetic number, because the mean of its divisors is an integer number (6847981140).

Almost surely, 2^121343440104 is an apocalyptic number.

It is an amenable number.

121343440104 is an abundant number, since it is smaller than the sum of its proper divisors (207359654616).

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

121343440104 is a wasteful number, since it uses less digits than its factorization.

121343440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331350 (or 331343 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 121343440104 its reverse (401044343121), we get a palindrome (522387783225).

The spelling of 121343440104 in words is "one hundred twenty-one billion, three hundred forty-three million, four hundred forty thousand, one hundred four".