121530656133 has 12 divisors (see below), whose sum is σ = 183176641440. Its totient is φ = 77497809576.

The previous prime is 121530656129. The next prime is 121530656153. The reversal of 121530656133 is 331656035121.

121530656133 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 30 + 6 + 5 + 613 + 3 = 666.

It is not a de Polignac number, because 121530656133 - 2² = 121530656129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121530656153) 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, 293552103 + ... + 293552516.

It is an arithmetic number, because the mean of its divisors is an integer number (15264720120).

Almost surely, 2^121530656133 is an apocalyptic number.

It is an amenable number.

121530656133 is a deficient number, since it is larger than the sum of its proper divisors (61645985307).

121530656133 is a wasteful number, since it uses less digits than its factorization.

121530656133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587104648 (or 587104645 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 121530656133 in words is "one hundred twenty-one billion, five hundred thirty million, six hundred fifty-six thousand, one hundred thirty-three".