20123231022132 has 48 divisors (see below), whose sum is σ = 53779371703680. Its totient is φ = 5736913615872.

The previous prime is 20123231022119. The next prime is 20123231022163. The reversal of 20123231022132 is 23122013232102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262064757 + ... + 262141532.

It is an arithmetic number, because the mean of its divisors is an integer number (1120403577160).

Almost surely, 2^{20123231022132} is an apocalyptic number.

It is an amenable number.

20123231022132 is an abundant number, since it is smaller than the sum of its proper divisors (33656140681548).

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

20123231022132 is a wasteful number, since it uses less digits than its factorization.

20123231022132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524206760 (or 524206758 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20123231022132 its reverse (23122013232102), we get a palindrome (43245244254234).

The spelling of 20123231022132 in words is "twenty trillion, one hundred twenty-three billion, two hundred thirty-one million, twenty-two thousand, one hundred thirty-two".