20211303312 has 60 divisors (see below), whose sum is σ = 56923919260. Its totient is φ = 6694182144.

The previous prime is 20211303241. The next prime is 20211303313. The reversal of 20211303312 is 21330311202.

20211303312 is a `hidden beast` number, since 202 + 1 + 130 + 331 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4250518416 + 15960784896 = 65196^2 + 126336^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20211303313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424387 + ... + 469602.

Almost surely, 2^20211303312 is an apocalyptic number.

It is an amenable number.

20211303312 is an abundant number, since it is smaller than the sum of its proper divisors (36712615948).

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

20211303312 is a wasteful number, since it uses less digits than its factorization.

20211303312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894160 (or 894151 counting only the distinct ones).

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

Adding to 20211303312 its reverse (21330311202), we get a palindrome (41541614514).

The spelling of 20211303312 in words is "twenty billion, two hundred eleven million, three hundred three thousand, three hundred twelve".