20101332312 has 24 divisors (see below), whose sum is σ = 54441108540. Its totient is φ = 6700444080.

The previous prime is 20101332259. The next prime is 20101332319. The reversal of 20101332312 is 21323310102.

20101332312 is a `hidden beast` number, since 20 + 1 + 0 + 1 + 332 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101332319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139592514 + ... + 139592657.

Almost surely, 2^20101332312 is an apocalyptic number.

It is an amenable number.

20101332312 is an abundant number, since it is smaller than the sum of its proper divisors (34339776228).

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

20101332312 is a wasteful number, since it uses less digits than its factorization.

20101332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279185183 (or 279185176 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20101332312 its reverse (21323310102), we get a palindrome (41424642414).

The spelling of 20101332312 in words is "twenty billion, one hundred one million, three hundred thirty-two thousand, three hundred twelve".