222211121201111 has 24 divisors (see below), whose sum is σ = 261581726700000. Its totient is φ = 188191979990784.

The previous prime is 222211121201099. The next prime is 222211121201141. The reversal of 222211121201111 is 111102121112222.

It is a happy number.

It is not a de Polignac number, because 222211121201111 - 2¹⁰ = 222211121200087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222211121201141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12109886 + ... + 24311963.

It is an arithmetic number, because the mean of its divisors is an integer number (10899238612500).

Almost surely, 2^{222211121201111} is an apocalyptic number.

222211121201111 is a deficient number, since it is larger than the sum of its proper divisors (39370605498889).

222211121201111 is a wasteful number, since it uses less digits than its factorization.

222211121201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36423351 (or 36423344 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 222211121201111 its reverse (111102121112222), we get a palindrome (333313242313333).

The spelling of 222211121201111 in words is "two hundred twenty-two trillion, two hundred eleven billion, one hundred twenty-one million, two hundred one thousand, one hundred eleven".