20001122211102 has 32 divisors (see below), whose sum is σ = 40635254169600. Its totient is φ = 6561715393728.

The previous prime is 20001122211097. The next prime is 20001122211131. The reversal of 20001122211102 is 20111222110002.

It is a congruent number.

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, 21580702 + ... + 22488417.

It is an arithmetic number, because the mean of its divisors is an integer number (1269851692800).

Almost surely, 2^{20001122211102} is an apocalyptic number.

20001122211102 is an abundant number, since it is smaller than the sum of its proper divisors (20634131958498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001122211102 is a wasteful number, since it uses less digits than its factorization.

20001122211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44070320.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20001122211102 its reverse (20111222110002), we get a palindrome (40112344321104).

The spelling of 20001122211102 in words is "twenty trillion, one billion, one hundred twenty-two million, two hundred eleven thousand, one hundred two".