13113021222 has 36 divisors (see below), whose sum is σ = 33050167956. Its totient is φ = 3746577240.

The previous prime is 13113021199. The next prime is 13113021287. The reversal of 13113021222 is 22212031131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13113021195 and 13113021204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7432804 + ... + 7434567.

It is an arithmetic number, because the mean of its divisors is an integer number (918060221).

Almost surely, 2^13113021222 is an apocalyptic number.

13113021222 is an abundant number, since it is smaller than the sum of its proper divisors (19937146734).

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

13113021222 is a wasteful number, since it uses less digits than its factorization.

13113021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14867393 (or 14867383 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13113021222 its reverse (22212031131), we get a palindrome (35325052353).

Subtracting 13113021222 from its reverse (22212031131), we obtain a palindrome (9099009909).

The spelling of 13113021222 in words is "thirteen billion, one hundred thirteen million, twenty-one thousand, two hundred twenty-two".