221322222113 has 4 divisors (see below), whose sum is σ = 221336398740. Its totient is φ = 221308045488.

The previous prime is 221322222073. The next prime is 221322222137. The reversal of 221322222113 is 311222223122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220780636129 + 541585984 = 469873^2 + 23272^2 .

It is a cyclic number.

It is not a de Polignac number, because 221322222113 - 2¹⁴ = 221322205729 is a prime.

It is a super-2 number, since 2×221322222113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221522222113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7064870 + ... + 7096127.

It is an arithmetic number, because the mean of its divisors is an integer number (55334099685).

Almost surely, 2^221322222113 is an apocalyptic number.

It is an amenable number.

221322222113 is a deficient number, since it is larger than the sum of its proper divisors (14176627).

221322222113 is a wasteful number, since it uses less digits than its factorization.

221322222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176626.

The product of its digits is 1152, while the sum is 23.

Adding to 221322222113 its reverse (311222223122), we get a palindrome (532544445235).

The spelling of 221322222113 in words is "two hundred twenty-one billion, three hundred twenty-two million, two hundred twenty-two thousand, one hundred thirteen".