13121231322 has 32 divisors (see below), whose sum is σ = 26618929344. Its totient is φ = 4311360000.

The previous prime is 13121231303. The next prime is 13121231323. The reversal of 13121231322 is 22313212131.

It is a super-2 number, since 2×13121231322² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13121231323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101172 + ... + 190992.

It is an arithmetic number, because the mean of its divisors is an integer number (831841542).

Almost surely, 2^13121231322 is an apocalyptic number.

13121231322 is an abundant number, since it is smaller than the sum of its proper divisors (13497698022).

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

13121231322 is a wasteful number, since it uses less digits than its factorization.

13121231322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90174.

The product of its digits is 432, while the sum is 21.

Adding to 13121231322 its reverse (22313212131), we get a palindrome (35434443453).

The spelling of 13121231322 in words is "thirteen billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred twenty-two".