201122201200020 has 48 divisors (see below), whose sum is σ = 563198260490880. Its totient is φ = 53627244402816.

The previous prime is 201122201199967. The next prime is 201122201200021. The reversal of 201122201200020 is 20002102221102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122201200021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166348387 + ... + 167553066.

It is an arithmetic number, because the mean of its divisors is an integer number (11733297093560).

Almost surely, 2^{201122201200020} is an apocalyptic number.

201122201200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122201200020 is an abundant number, since it is smaller than the sum of its proper divisors (362076059290860).

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

201122201200020 is a wasteful number, since it uses less digits than its factorization.

201122201200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333911504 (or 333911502 counting only the distinct ones).

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

Adding to 201122201200020 its reverse (20002102221102), we get a palindrome (221124303421122).

The spelling of 201122201200020 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred one million, two hundred thousand, twenty".