1111172212 has 12 divisors (see below), whose sum is σ = 2046896320. Its totient is φ = 526344696.

The previous prime is 1111172177. The next prime is 1111172221. The reversal of 1111172212 is 2122711111.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1111172212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7310268 + ... + 7310419.

Almost surely, 2^1111172212 is an apocalyptic number.

It is an amenable number.

1111172212 is a deficient number, since it is larger than the sum of its proper divisors (935724108).

1111172212 is a wasteful number, since it uses less digits than its factorization.

1111172212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14620710 (or 14620708 counting only the distinct ones).

The product of its digits is 56, while the sum is 19.

The square root of 1111172212 is about 33334.2498340671. The cubic root of 1111172212 is about 1035.7631537701.

Adding to 1111172212 its reverse (2122711111), we get a palindrome (3233883323).

The spelling of 1111172212 in words is "one billion, one hundred eleven million, one hundred seventy-two thousand, two hundred twelve".