121421396106 has 96 divisors (see below), whose sum is σ = 271851914880. Its totient is φ = 39142656000.

The previous prime is 121421396087. The next prime is 121421396153. The reversal of 121421396106 is 601693124121.

It is a happy number.

121421396106 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 2 + 1 + 39 + 610 + 6 = 666.

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 47 ways as a sum of consecutive naturals, for example, 74996965 + ... + 74998583.

It is an arithmetic number, because the mean of its divisors is an integer number (2831790780).

Almost surely, 2^121421396106 is an apocalyptic number.

121421396106 is an abundant number, since it is smaller than the sum of its proper divisors (150430518774).

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

121421396106 is a wasteful number, since it uses less digits than its factorization.

121421396106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 121421396106 in words is "one hundred twenty-one billion, four hundred twenty-one million, three hundred ninety-six thousand, one hundred six".