12102210212 has 12 divisors (see below), whose sum is σ = 21184340940. Its totient is φ = 6049541376.

The previous prime is 12102210191. The next prime is 12102210221. The reversal of 12102210212 is 21201220121.

It can be written as a sum of positive squares in 2 ways, for example, as 3535967296 + 8566242916 = 59464^2 + 92554^2 .

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, 373433 + ... + 404544.

It is an arithmetic number, because the mean of its divisors is an integer number (1765361745).

Almost surely, 2^12102210212 is an apocalyptic number.

It is an amenable number.

12102210212 is a deficient number, since it is larger than the sum of its proper divisors (9082130728).

12102210212 is a wasteful number, since it uses less digits than its factorization.

12102210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781870 (or 781868 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12102210212 its reverse (21201220121), we get a palindrome (33303430333).

Subtracting 12102210212 from its reverse (21201220121), we obtain a palindrome (9099009909).

The spelling of 12102210212 in words is "twelve billion, one hundred two million, two hundred ten thousand, two hundred twelve".