221122233213 has 96 divisors (see below), whose sum is σ = 369575049600. Its totient is φ = 116825296896.

The previous prime is 221122233203. The next prime is 221122233239. The reversal of 221122233213 is 312332221122.

It is not a de Polignac number, because 221122233213 - 2⁹ = 221122232701 is a prime.

It is a super-2 number, since 2×221122233213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122233203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68478483 + ... + 68481711.

It is an arithmetic number, because the mean of its divisors is an integer number (3849740100).

Almost surely, 2^221122233213 is an apocalyptic number.

It is an amenable number.

221122233213 is a deficient number, since it is larger than the sum of its proper divisors (148452816387).

221122233213 is a wasteful number, since it uses less digits than its factorization.

221122233213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739 (or 3732 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 221122233213 its reverse (312332221122), we get a palindrome (533454454335).

The spelling of 221122233213 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred thirty-three thousand, two hundred thirteen".