201222220121022 has 16 divisors (see below), whose sum is σ = 412260158297232. Its totient is φ = 65438120364480.

The previous prime is 201222220121011. The next prime is 201222220121029. The reversal of 201222220121022 is 220121022222102.

It is a self number, because there is not a number n which added to its sum of digits gives 201222220121022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222220121029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408988252033 + ... + 408988252524.

It is an arithmetic number, because the mean of its divisors is an integer number (25766259893577).

Almost surely, 2^{201222220121022} is an apocalyptic number.

201222220121022 is an abundant number, since it is smaller than the sum of its proper divisors (211037938176210).

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

201222220121022 is a wasteful number, since it uses less digits than its factorization.

201222220121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817976504603.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 201222220121022 its reverse (220121022222102), we get a palindrome (421343242343124).

The spelling of 201222220121022 in words is "two hundred one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, twenty-two".