121420336863 has 24 divisors (see below), whose sum is σ = 193415651968. Its totient is φ = 66366389232.

The previous prime is 121420336859. The next prime is 121420336867. The reversal of 121420336863 is 368633024121.

It is an interprime number because it is at equal distance from previous prime (121420336859) and next prime (121420336867).

It is not a de Polignac number, because 121420336863 - 2² = 121420336859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420336867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5453845 + ... + 5476062.

Almost surely, 2^121420336863 is an apocalyptic number.

121420336863 is a deficient number, since it is larger than the sum of its proper divisors (71995315105).

121420336863 is a wasteful number, since it uses less digits than its factorization.

121420336863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10929963 (or 10929940 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 121420336863 in words is "one hundred twenty-one billion, four hundred twenty million, three hundred thirty-six thousand, eight hundred sixty-three".