201221330122110 has 128 divisors (see below), whose sum is σ = 504404281175040. Its totient is φ = 51277547059200.

The previous prime is 201221330122103. The next prime is 201221330122157. The reversal of 201221330122110 is 11221033122102.

It is a super-2 number, since 2×201221330122110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5088908940 + ... + 5088948480.

It is an arithmetic number, because the mean of its divisors is an integer number (3940658446680).

Almost surely, 2^{201221330122110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201221330122110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252202140587520).

201221330122110 is an abundant number, since it is smaller than the sum of its proper divisors (303182951052930).

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

201221330122110 is a wasteful number, since it uses less digits than its factorization.

201221330122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46354.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201221330122110 its reverse (11221033122102), we get a palindrome (212442363244212).

The spelling of 201221330122110 in words is "two hundred one trillion, two hundred twenty-one billion, three hundred thirty million, one hundred twenty-two thousand, one hundred ten".