13223123131212 has 24 divisors (see below), whose sum is σ = 34282171081200. Its totient is φ = 4407707710368.

The previous prime is 13223123131087. The next prime is 13223123131249. The reversal of 13223123131212 is 21213132132231.

13223123131212 is a `hidden beast` number, since 1 + 3 + 2 + 2 + 312 + 3 + 131 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61218162537 + ... + 61218162752.

It is an arithmetic number, because the mean of its divisors is an integer number (1428423795050).

Almost surely, 2^{13223123131212} is an apocalyptic number.

13223123131212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13223123131212 is an abundant number, since it is smaller than the sum of its proper divisors (21059047949988).

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

13223123131212 is a wasteful number, since it uses less digits than its factorization.

13223123131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122436325302 (or 122436325294 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 13223123131212 its reverse (21213132132231), we get a palindrome (34436255263443).

The spelling of 13223123131212 in words is "thirteen trillion, two hundred twenty-three billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred twelve".