222122122211 has 16 divisors (see below), whose sum is σ = 244124562528. Its totient is φ = 200426150400.

The previous prime is 222122122199. The next prime is 222122122249. The reversal of 222122122211 is 112221221222.

It is a cyclic number.

It is not a de Polignac number, because 222122122211 - 2¹⁰ = 222122121187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222122112211) 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, 790571 + ... + 1034043.

It is an arithmetic number, because the mean of its divisors is an integer number (15257785158).

Almost surely, 2^222122122211 is an apocalyptic number.

222122122211 is a deficient number, since it is larger than the sum of its proper divisors (22002440317).

222122122211 is a wasteful number, since it uses less digits than its factorization.

222122122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244102.

The product of its digits is 256, while the sum is 20.

Adding to 222122122211 its reverse (112221221222), we get a palindrome (334343343433).

It can be divided in two parts, 2221221222 and 11, that multiplied together give a palindrome (24433433442).

The spelling of 222122122211 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".