121631265732 has 12 divisors (see below), whose sum is σ = 283806286736. Its totient is φ = 40543755240.

The previous prime is 121631265731. The next prime is 121631265781. The reversal of 121631265732 is 237562136121.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (121631265731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5067969394 + ... + 5067969417.

Almost surely, 2^121631265732 is an apocalyptic number.

121631265732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121631265732 is an abundant number, since it is smaller than the sum of its proper divisors (162175021004).

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

121631265732 is a wasteful number, since it uses less digits than its factorization.

121631265732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135938818 (or 10135938816 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The spelling of 121631265732 in words is "one hundred twenty-one billion, six hundred thirty-one million, two hundred sixty-five thousand, seven hundred thirty-two".