20001222111122 has 32 divisors (see below), whose sum is σ = 35395423104000. Its totient is φ = 8295073194240.

The previous prime is 20001222111107. The next prime is 20001222111139. The reversal of 20001222111122 is 22111122210002.

It is a self number, because there is not a number n which added to its sum of digits gives 20001222111122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8988254 + ... + 10990502.

It is an arithmetic number, because the mean of its divisors is an integer number (1106106972000).

Almost surely, 2^{20001222111122} is an apocalyptic number.

20001222111122 is a deficient number, since it is larger than the sum of its proper divisors (15394200992878).

20001222111122 is a wasteful number, since it uses less digits than its factorization.

20001222111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025306.

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

Adding to 20001222111122 its reverse (22111122210002), we get a palindrome (42112344321124).

The spelling of 20001222111122 in words is "twenty trillion, one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twenty-two".