121650620432 has 20 divisors (see below), whose sum is σ = 257125175376. Its totient is φ = 55295736480.

The previous prime is 121650620393. The next prime is 121650620447. The reversal of 121650620432 is 234026056121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345598178 + ... + 345598529.

Almost surely, 2^121650620432 is an apocalyptic number.

It is an amenable number.

121650620432 is an abundant number, since it is smaller than the sum of its proper divisors (135474554944).

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

121650620432 is a wasteful number, since it uses less digits than its factorization.

121650620432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691196726 (or 691196720 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 121650620432 its reverse (234026056121), we get a palindrome (355676676553).

The spelling of 121650620432 in words is "one hundred twenty-one billion, six hundred fifty million, six hundred twenty thousand, four hundred thirty-two".