20211202112 has 28 divisors (see below), whose sum is σ = 40503712236. Its totient is φ = 10005542400.

The previous prime is 20211202093. The next prime is 20211202117. The reversal of 20211202112 is 21120211202.

It can be written as a sum of positive squares in 2 ways, for example, as 11505565696 + 8705636416 = 107264^2 + 93304^2 .

It is a super-2 number, since 2×20211202112² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20211202117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556903 + ... + 1569830.

Almost surely, 2^20211202112 is an apocalyptic number.

It is an amenable number.

20211202112 is an abundant number, since it is smaller than the sum of its proper divisors (20292510124).

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

20211202112 is a wasteful number, since it uses less digits than its factorization.

20211202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126846 (or 3126836 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20211202112 its reverse (21120211202), we get a palindrome (41331413314).

The spelling of 20211202112 in words is "twenty billion, two hundred eleven million, two hundred two thousand, one hundred twelve".