221112222213 has 16 divisors (see below), whose sum is σ = 300632181696. Its totient is φ = 144504896640.

The previous prime is 221112222211. The next prime is 221112222241. The reversal of 221112222213 is 312222211122.

It is not a de Polignac number, because 221112222213 - 2¹ = 221112222211 is a prime.

It is a super-2 number, since 2×221112222213² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221112222213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397048 + ... + 774513.

It is an arithmetic number, because the mean of its divisors is an integer number (18789511356).

Almost surely, 2^221112222213 is an apocalyptic number.

It is an amenable number.

221112222213 is a deficient number, since it is larger than the sum of its proper divisors (79519959483).

221112222213 is a wasteful number, since it uses less digits than its factorization.

221112222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172804.

The product of its digits is 384, while the sum is 21.

Adding to 221112222213 its reverse (312222211122), we get a palindrome (533334433335).

The spelling of 221112222213 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, two hundred thirteen".