20112100221122 has 32 divisors (see below), whose sum is σ = 37738720233984. Its totient is φ = 7826001883200.

The previous prime is 20112100221119. The next prime is 20112100221163. The reversal of 20112100221122 is 22112200121102.

It is a self number, because there is not a number n which added to its sum of digits gives 20112100221122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905776154 + ... + 905798357.

It is an arithmetic number, because the mean of its divisors is an integer number (1179335007312).

Almost surely, 2^{20112100221122} is an apocalyptic number.

20112100221122 is a deficient number, since it is larger than the sum of its proper divisors (17626620012862).

20112100221122 is a wasteful number, since it uses less digits than its factorization.

20112100221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811574594.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20112100221122 its reverse (22112200121102), we get a palindrome (42224300342224).

The spelling of 20112100221122 in words is "twenty trillion, one hundred twelve billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-two".