20012001222112 has 24 divisors (see below), whose sum is σ = 39398902540200. Its totient is φ = 10005930735744.

The previous prime is 20012001222091. The next prime is 20012001222113. The reversal of 20012001222112 is 21122210021002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012001222113) 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, 2633839 + ... + 6852817.

It is an arithmetic number, because the mean of its divisors is an integer number (1641620939175).

Almost surely, 2^{20012001222112} is an apocalyptic number.

It is an amenable number.

20012001222112 is a deficient number, since it is larger than the sum of its proper divisors (19386901318088).

20012001222112 is a wasteful number, since it uses less digits than its factorization.

20012001222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367218 (or 4367210 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012001222112 its reverse (21122210021002), we get a palindrome (41134211243114).

The spelling of 20012001222112 in words is "twenty trillion, twelve billion, one million, two hundred twenty-two thousand, one hundred twelve".