20121112012222 has 16 divisors (see below), whose sum is σ = 32503415428512. Its totient is φ = 9286644042720.

The previous prime is 20121112012147. The next prime is 20121112012231. The reversal of 20121112012222 is 22221021112102.

It is a self number, because there is not a number n which added to its sum of digits gives 20121112012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14295447 + ... + 15639757.

It is an arithmetic number, because the mean of its divisors is an integer number (2031463464282).

Almost surely, 2^{20121112012222} is an apocalyptic number.

20121112012222 is a deficient number, since it is larger than the sum of its proper divisors (12382303416290).

20121112012222 is a wasteful number, since it uses less digits than its factorization.

20121112012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920003.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20121112012222 its reverse (22221021112102), we get a palindrome (42342133124324).

The spelling of 20121112012222 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, twelve thousand, two hundred twenty-two".