123021320132 has 6 divisors (see below), whose sum is σ = 215287310238. Its totient is φ = 61510660064.

The previous prime is 123021320113. The next prime is 123021320143. The reversal of 123021320132 is 231023120321.

It can be written as a sum of positive squares in only one way, i.e., 105101749636 + 17919570496 = 324194^2 + 133864^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15377665013 + ... + 15377665020.

It is an arithmetic number, because the mean of its divisors is an integer number (35881218373).

Almost surely, 2^123021320132 is an apocalyptic number.

It is an amenable number.

123021320132 is a deficient number, since it is larger than the sum of its proper divisors (92265990106).

123021320132 is a wasteful number, since it uses less digits than its factorization.

123021320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30755330037 (or 30755330035 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123021320132 its reverse (231023120321), we get a palindrome (354044440453).

The spelling of 123021320132 in words is "one hundred twenty-three billion, twenty-one million, three hundred twenty thousand, one hundred thirty-two".