13220331222 has 48 divisors (see below), whose sum is σ = 30786394032. Its totient is φ = 3773689920.

The previous prime is 13220331203. The next prime is 13220331247. The reversal of 13220331222 is 22213302231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 300772 + ... + 341912.

It is an arithmetic number, because the mean of its divisors is an integer number (641383209).

Almost surely, 2^13220331222 is an apocalyptic number.

13220331222 is an abundant number, since it is smaller than the sum of its proper divisors (17566062810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13220331222 is a wasteful number, since it uses less digits than its factorization.

13220331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42253 (or 42246 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13220331222 its reverse (22213302231), we get a palindrome (35433633453).

The spelling of 13220331222 in words is "thirteen billion, two hundred twenty million, three hundred thirty-one thousand, two hundred twenty-two".