201100222120020 has 96 divisors (see below), whose sum is σ = 563614121161728. Its totient is φ = 53575921492992.

The previous prime is 201100222119893. The next prime is 201100222120069. The reversal of 201100222120020 is 20021222001102.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 1498969264 + ... + 1499103416.

It is an arithmetic number, because the mean of its divisors is an integer number (5870980428768).

Almost surely, 2^{201100222120020} is an apocalyptic number.

201100222120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201100222120020 is an abundant number, since it is smaller than the sum of its proper divisors (362513899041708).

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

201100222120020 is a wasteful number, since it uses less digits than its factorization.

201100222120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157649 (or 157647 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201100222120020 its reverse (20021222001102), we get a palindrome (221121444121122).

The spelling of 201100222120020 in words is "two hundred one trillion, one hundred billion, two hundred twenty-two million, one hundred twenty thousand, twenty".