20113121222 has 16 divisors (see below), whose sum is σ = 31173202944. Its totient is φ = 9722685000.

The previous prime is 20113121219. The next prime is 20113121233. The reversal of 20113121222 is 22212131102.

It is a self number, because there is not a number n which added to its sum of digits gives 20113121222.

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, 93404 + ... + 221247.

It is an arithmetic number, because the mean of its divisors is an integer number (1948325184).

Almost surely, 2^20113121222 is an apocalyptic number.

20113121222 is a deficient number, since it is larger than the sum of its proper divisors (11060081722).

20113121222 is a wasteful number, since it uses less digits than its factorization.

20113121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315715.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20113121222 its reverse (22212131102), we get a palindrome (42325252324).

The spelling of 20113121222 in words is "twenty billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred twenty-two".