20331012112 has 10 divisors (see below), whose sum is σ = 39391335998. Its totient is φ = 10165506048.

The previous prime is 20331012109. The next prime is 20331012133. The reversal of 20331012112 is 21121013302.

It can be written as a sum of positive squares in only one way, i.e., 15327430416 + 5003581696 = 123804^2 + 70736^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1270688257 = 20331012112 / (2 + 0 + 3 + 3 + 1 + 0 + 1 + 2 + 1 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635344113 + ... + 635344144.

Almost surely, 2^20331012112 is an apocalyptic number.

It is an amenable number.

20331012112 is a deficient number, since it is larger than the sum of its proper divisors (19060323886).

20331012112 is a wasteful number, since it uses less digits than its factorization.

20331012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270688265 (or 1270688259 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20331012112 its reverse (21121013302), we get a palindrome (41452025414).

The spelling of 20331012112 in words is "twenty billion, three hundred thirty-one million, twelve thousand, one hundred twelve".