13123313203212 has 48 divisors (see below), whose sum is σ = 34025696975200. Its totient is φ = 4374143000640.

The previous prime is 13123313203207. The next prime is 13123313203261. The reversal of 13123313203212 is 21230231332131.

13123313203212 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 3 + 313 + 20 + 321 + 2 = 666.

It is a super-3 number, since 3×13123313203212³ (a number of 40 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2480239 + ... + 5691942.

Almost surely, 2^{13123313203212} is an apocalyptic number.

13123313203212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13123313203212 is an abundant number, since it is smaller than the sum of its proper divisors (20902383771988).

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

13123313203212 is a wasteful number, since it uses less digits than its factorization.

13123313203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187063 (or 8187055 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 13123313203212 its reverse (21230231332131), we get a palindrome (34353544535343).

The spelling of 13123313203212 in words is "thirteen trillion, one hundred twenty-three billion, three hundred thirteen million, two hundred three thousand, two hundred twelve".