11112122222 has 12 divisors (see below), whose sum is σ = 17591629536. Its totient is φ = 5263636500.

The previous prime is 11112122213. The next prime is 11112122237. The reversal of 11112122222 is 22222121111.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11112122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7694654 + ... + 7696097.

It is an arithmetic number, because the mean of its divisors is an integer number (1465969128).

Almost surely, 2^11112122222 is an apocalyptic number.

11112122222 is a deficient number, since it is larger than the sum of its proper divisors (6479507314).

11112122222 is a wasteful number, since it uses less digits than its factorization.

11112122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390791 (or 15390772 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 11112122222 its reverse (22222121111), we get a palindrome (33334243333).

The spelling of 11112122222 in words is "eleven billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-two".