11213105212 has 12 divisors (see below), whose sum is σ = 19695345376. Its totient is φ = 5585863680.

The previous prime is 11213105179. The next prime is 11213105221. The reversal of 11213105212 is 21250131211.

It is a self number, because there is not a number n which added to its sum of digits gives 11213105212.

It is a congruent number.

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, 5171013 + ... + 5173180.

Almost surely, 2^11213105212 is an apocalyptic number.

It is an amenable number.

11213105212 is a deficient number, since it is larger than the sum of its proper divisors (8482240164).

11213105212 is a wasteful number, since it uses less digits than its factorization.

11213105212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344468 (or 10344466 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 11213105212 its reverse (21250131211), we get a palindrome (32463236423).

The spelling of 11213105212 in words is "eleven billion, two hundred thirteen million, one hundred five thousand, two hundred twelve".