20012212112 has 20 divisors (see below), whose sum is σ = 38791250460. Its totient is φ = 10001566848.

The previous prime is 20012212069. The next prime is 20012212123. The reversal of 20012212112 is 21121221002.

It can be written as a sum of positive squares in 2 ways, for example, as 18745991056 + 1266221056 = 136916^2 + 35584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247187 + ... + 318002.

It is an arithmetic number, because the mean of its divisors is an integer number (1939562523).

Almost surely, 2^20012212112 is an apocalyptic number.

It is an amenable number.

20012212112 is a deficient number, since it is larger than the sum of its proper divisors (18779038348).

20012212112 is a wasteful number, since it uses less digits than its factorization.

20012212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567410 (or 567404 counting only the distinct ones).

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

Adding to 20012212112 its reverse (21121221002), we get a palindrome (41133433114).

The spelling of 20012212112 in words is "twenty billion, twelve million, two hundred twelve thousand, one hundred twelve".