211001222222 has 32 divisors (see below), whose sum is σ = 362825616384. Its totient is φ = 90152143200.

The previous prime is 211001222221. The next prime is 211001222227. The reversal of 211001222222 is 222222100112.

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 211001222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211001222221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7491947 + ... + 7520057.

It is an arithmetic number, because the mean of its divisors is an integer number (11338300512).

Almost surely, 2^211001222222 is an apocalyptic number.

211001222222 is a deficient number, since it is larger than the sum of its proper divisors (151824394162).

211001222222 is a wasteful number, since it uses less digits than its factorization.

211001222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29744.

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

Adding to 211001222222 its reverse (222222100112), we get a palindrome (433223322334).

The spelling of 211001222222 in words is "two hundred eleven billion, one million, two hundred twenty-two thousand, two hundred twenty-two".