13131112231222 has 16 divisors (see below), whose sum is σ = 20030681895120. Its totient is φ = 6454220174208.

The previous prime is 13131112231207. The next prime is 13131112231243. The reversal of 13131112231222 is 22213221113131.

It is a super-2 number, since 2×13131112231222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15645778 + ... + 16463674.

It is an arithmetic number, because the mean of its divisors is an integer number (1251917618445).

Almost surely, 2^{13131112231222} is an apocalyptic number.

13131112231222 is a deficient number, since it is larger than the sum of its proper divisors (6899569663898).

13131112231222 is a wasteful number, since it uses less digits than its factorization.

13131112231222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954015.

The product of its digits is 864, while the sum is 25.

Adding to 13131112231222 its reverse (22213221113131), we get a palindrome (35344333344353).

The spelling of 13131112231222 in words is "thirteen trillion, one hundred thirty-one billion, one hundred twelve million, two hundred thirty-one thousand, two hundred twenty-two".