13011222312 has 96 divisors (see below), whose sum is σ = 38461344480. Its totient is φ = 3940836480.

The previous prime is 13011222293. The next prime is 13011222317. The reversal of 13011222312 is 21322211031.

13011222312 is a `hidden beast` number, since 130 + 1 + 1 + 222 + 312 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (13011222317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2859223 + ... + 2863769.

It is an arithmetic number, because the mean of its divisors is an integer number (400639005).

Almost surely, 2^13011222312 is an apocalyptic number.

13011222312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13011222312 is an abundant number, since it is smaller than the sum of its proper divisors (25450122168).

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

13011222312 is a wasteful number, since it uses less digits than its factorization.

13011222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8183 (or 8176 counting only the distinct ones).

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

Adding to 13011222312 its reverse (21322211031), we get a palindrome (34333433343).

The spelling of 13011222312 in words is "thirteen billion, eleven million, two hundred twenty-two thousand, three hundred twelve".