12213510212 has 12 divisors (see below), whose sum is σ = 21374533740. Its totient is φ = 6106500576.

The previous prime is 12213510181. The next prime is 12213510229. The reversal of 12213510212 is 21201531221.

It can be written as a sum of positive squares in 2 ways, for example, as 8644164676 + 3569345536 = 92974^2 + 59744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80714 + ... + 175902.

It is an arithmetic number, because the mean of its divisors is an integer number (1781211145).

Almost surely, 2^12213510212 is an apocalyptic number.

It is an amenable number.

12213510212 is a deficient number, since it is larger than the sum of its proper divisors (9161023528).

12213510212 is a wasteful number, since it uses less digits than its factorization.

12213510212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127270 (or 127268 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 12213510212 in words is "twelve billion, two hundred thirteen million, five hundred ten thousand, two hundred twelve".