11222812 has 6 divisors (see below), whose sum is σ = 19639928. Its totient is φ = 5611404.

The previous prime is 11222791. The next prime is 11222843. The reversal of 11222812 is 21822211.

It is a self number, because there is not a number n which added to its sum of digits gives 11222812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402848 + ... + 1402855.

Almost surely, 2^11222812 is an apocalyptic number.

It is an amenable number.

11222812 is a deficient number, since it is larger than the sum of its proper divisors (8417116).

11222812 is a wasteful number, since it uses less digits than its factorization.

11222812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805707 (or 2805705 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 11222812 is about 3350.0465668405. The cubic root of 11222812 is about 223.8895873793.

The spelling of 11222812 in words is "eleven million, two hundred twenty-two thousand, eight hundred twelve".