201222221111 has 8 divisors (see below), whose sum is σ = 204243452784. Its totient is φ = 198201516480.

The previous prime is 201222221041. The next prime is 201222221147. The reversal of 201222221111 is 111122222102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201222221111 - 2²⁶ = 201155112247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201222221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222221171) 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, 674291 + ... + 925803.

It is an arithmetic number, because the mean of its divisors is an integer number (25530431598).

Almost surely, 2^201222221111 is an apocalyptic number.

201222221111 is a deficient number, since it is larger than the sum of its proper divisors (3021231673).

201222221111 is a wasteful number, since it uses less digits than its factorization.

201222221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263521.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201222221111 its reverse (111122222102), we get a palindrome (312344443213).

Subtracting from 201222221111 its reverse (111122222102), we obtain a palindrome (90099999009).

The spelling of 201222221111 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".