20002201121100 has 144 divisors (see below), whose sum is σ = 64840550939136. Its totient is φ = 4717963872000.

The previous prime is 20002201121087. The next prime is 20002201121117. The reversal of 20002201121100 is 112110220002.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81786996 + ... + 82031195.

It is an arithmetic number, because the mean of its divisors is an integer number (450281603744).

Almost surely, 2^{20002201121100} is an apocalyptic number.

20002201121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002201121100 is an abundant number, since it is smaller than the sum of its proper divisors (44838349818036).

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

20002201121100 is a wasteful number, since it uses less digits than its factorization.

20002201121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163818256 (or 163818249 counting only the distinct ones).

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

Adding to 20002201121100 its reverse (112110220002), we get a palindrome (20114311341102).

It can be divided in two parts, 20002 and 201121100, that added together give a palindrome (201141102).

The spelling of 20002201121100 in words is "twenty trillion, two billion, two hundred one million, one hundred twenty-one thousand, one hundred".