221222113213 has 8 divisors (see below), whose sum is σ = 221372658720. Its totient is φ = 221071622640.

The previous prime is 221222113207. The next prime is 221222113283. The reversal of 221222113213 is 312311222122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221222113213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222113283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10667931 + ... + 10688647.

It is an arithmetic number, because the mean of its divisors is an integer number (27671582340).

Almost surely, 2^221222113213 is an apocalyptic number.

It is an amenable number.

221222113213 is a deficient number, since it is larger than the sum of its proper divisors (150545507).

221222113213 is a wasteful number, since it uses less digits than its factorization.

221222113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27467.

The product of its digits is 576, while the sum is 22.

Adding to 221222113213 its reverse (312311222122), we get a palindrome (533533335335).

The spelling of 221222113213 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred thirteen".