211201222222 has 16 divisors (see below), whose sum is σ = 324710360640. Its totient is φ = 102980658528.

The previous prime is 211201222187. The next prime is 211201222229. The reversal of 211201222222 is 222222102112.

It is a self number, because there is not a number n which added to its sum of digits gives 211201222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201222229) 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, 4029597 + ... + 4081672.

It is an arithmetic number, because the mean of its divisors is an integer number (20294397540).

Almost surely, 2^211201222222 is an apocalyptic number.

211201222222 is a deficient number, since it is larger than the sum of its proper divisors (113509138418).

211201222222 is a wasteful number, since it uses less digits than its factorization.

211201222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111595.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 211201222222 its reverse (222222102112), we get a palindrome (433423324334).

The spelling of 211201222222 in words is "two hundred eleven billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-two".