13123210212 has 72 divisors (see below), whose sum is σ = 37933162176. Its totient is φ = 3747345984.

The previous prime is 13123210189. The next prime is 13123210267. The reversal of 13123210212 is 21201232131.

13123210212 is a `hidden beast` number, since 131 + 2 + 321 + 0 + 212 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456538 + ... + 484430.

Almost surely, 2^13123210212 is an apocalyptic number.

13123210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13123210212 is an abundant number, since it is smaller than the sum of its proper divisors (24809951964).

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

13123210212 is a wasteful number, since it uses less digits than its factorization.

13123210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29777 (or 29772 counting only the distinct ones).

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

Adding to 13123210212 its reverse (21201232131), we get a palindrome (34324442343).

The spelling of 13123210212 in words is "thirteen billion, one hundred twenty-three million, two hundred ten thousand, two hundred twelve".