201100000122 has 24 divisors (see below), whose sum is σ = 497961905376. Its totient is φ = 57457142856.

The previous prime is 201100000117. The next prime is 201100000159. The reversal of 201100000122 is 221000001102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798015748 + ... + 798015999.

It is an arithmetic number, because the mean of its divisors is an integer number (20748412724).

Almost surely, 2^201100000122 is an apocalyptic number.

201100000122 is an abundant number, since it is smaller than the sum of its proper divisors (296861905254).

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

201100000122 is a wasteful number, since it uses less digits than its factorization.

201100000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596031762 (or 1596031759 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201100000122 its reverse (221000001102), we get a palindrome (422100001224).

The spelling of 201100000122 in words is "two hundred one billion, one hundred million, one hundred twenty-two", and thus it is an aban number.