20000111222100 has 72 divisors (see below), whose sum is σ = 58289375366208. Its totient is φ = 5294433324800.

The previous prime is 20000111222057. The next prime is 20000111222107. The reversal of 20000111222100 is 122211100002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000111222107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243269256 + ... + 243351455.

It is an arithmetic number, because the mean of its divisors is an integer number (809574657864).

Almost surely, 2^{20000111222100} is an apocalyptic number.

20000111222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000111222100 is an abundant number, since it is smaller than the sum of its proper divisors (38289264144108).

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

20000111222100 is a wasteful number, since it uses less digits than its factorization.

20000111222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486620865 (or 486620858 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20000111222100 its reverse (122211100002), we get a palindrome (20122322322102).

The spelling of 20000111222100 in words is "twenty trillion, one hundred eleven million, two hundred twenty-two thousand, one hundred".