13123222222 has 24 divisors (see below), whose sum is σ = 21674778048. Its totient is φ = 5954699520.

The previous prime is 13123222201. The next prime is 13123222237. The reversal of 13123222222 is 22222232131.

It is a super-2 number, since 2×13123222222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13123222193 and 13123222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92643 + ... + 186625.

It is an arithmetic number, because the mean of its divisors is an integer number (903115752).

Almost surely, 2^13123222222 is an apocalyptic number.

13123222222 is a deficient number, since it is larger than the sum of its proper divisors (8551555826).

13123222222 is a wasteful number, since it uses less digits than its factorization.

13123222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94584 (or 94573 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

Adding to 13123222222 its reverse (22222232131), we get a palindrome (35345454353).

Subtracting 13123222222 from its reverse (22222232131), we obtain a palindrome (9099009909).

The spelling of 13123222222 in words is "thirteen billion, one hundred twenty-three million, two hundred twenty-two thousand, two hundred twenty-two".