201022212122 has 16 divisors (see below), whose sum is σ = 313673666400. Its totient is φ = 96503048880.

The previous prime is 201022212043. The next prime is 201022212133. The reversal of 201022212122 is 221212220102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201022212122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9670904 + ... + 9691667.

It is an arithmetic number, because the mean of its divisors is an integer number (19604604150).

Almost surely, 2^201022212122 is an apocalyptic number.

201022212122 is a deficient number, since it is larger than the sum of its proper divisors (112651454278).

201022212122 is a wasteful number, since it uses less digits than its factorization.

201022212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19362781.

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

Adding to 201022212122 its reverse (221212220102), we get a palindrome (422234432224).

The spelling of 201022212122 in words is "two hundred one billion, twenty-two million, two hundred twelve thousand, one hundred twenty-two".