201222221121122 has 4 divisors (see below), whose sum is σ = 301833331681686. Its totient is φ = 100611110560560.

The previous prime is 201222221121109. The next prime is 201222221121199. The reversal of 201222221121122 is 221121122222102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 181496373699481 + 19725847421641 = 13472059^2 + 4441379^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50305555280279 + ... + 50305555280282.

Almost surely, 2^{201222221121122} is an apocalyptic number.

201222221121122 is a deficient number, since it is larger than the sum of its proper divisors (100611110560564).

201222221121122 is a wasteful number, since it uses less digits than its factorization.

201222221121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100611110560563.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 201222221121122 its reverse (221121122222102), we get a palindrome (422343343343224).

The spelling of 201222221121122 in words is "two hundred one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".