201122222020100 has 72 divisors (see below), whose sum is σ = 439843396741728. Its totient is φ = 79822296288000.

The previous prime is 201122222020091. The next prime is 201122222020117. The reversal of 201122222020100 is 1020222221102.

It is a happy number.

201122222020100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468914 + ... + 20061513.

Almost surely, 2^{201122222020100} is an apocalyptic number.

201122222020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201122222020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219921698370864).

201122222020100 is an abundant number, since it is smaller than the sum of its proper divisors (238721174721628).

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

201122222020100 is a wasteful number, since it uses less digits than its factorization.

201122222020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20531205 (or 20531198 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201122222020100 its reverse (1020222221102), we get a palindrome (202142444241202).

The spelling of 201122222020100 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty thousand, one hundred".