201020221122 has 192 divisors, whose sum is σ = 521944227840. Its totient is φ = 50363596800.

The previous prime is 201020221117. The next prime is 201020221139. The reversal of 201020221122 is 221122020102.

201020221122 is a modest number, since divided by 221122 gives 201020 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13078722 + ... + 13094082.

It is an arithmetic number, because the mean of its divisors is an integer number (2718459520).

Almost surely, 2^201020221122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201020221122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260972113920).

201020221122 is an abundant number, since it is smaller than the sum of its proper divisors (320924006718).

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

201020221122 is a wasteful number, since it uses less digits than its factorization.

201020221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15469 (or 15446 counting only the distinct ones).

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

Adding to 201020221122 its reverse (221122020102), we get a palindrome (422142241224).

The spelling of 201020221122 in words is "two hundred one billion, twenty million, two hundred twenty-one thousand, one hundred twenty-two".