20112320132 has 24 divisors (see below), whose sum is σ = 35628081216. Its totient is φ = 9933362208.

The previous prime is 20112320131. The next prime is 20112320141. The reversal of 20112320132 is 23102321102.

It is a self number, because there is not a number n which added to its sum of digits gives 20112320132.

It is not an unprimeable number, because it can be changed into a prime (20112320131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102083 + ... + 225045.

It is an arithmetic number, because the mean of its divisors is an integer number (1484503384).

Almost surely, 2^20112320132 is an apocalyptic number.

It is an amenable number.

20112320132 is a deficient number, since it is larger than the sum of its proper divisors (15515761084).

20112320132 is a wasteful number, since it uses less digits than its factorization.

20112320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123467 (or 123465 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20112320132 its reverse (23102321102), we get a palindrome (43214641234).

The spelling of 20112320132 in words is "twenty billion, one hundred twelve million, three hundred twenty thousand, one hundred thirty-two".