11212222222 has 8 divisors (see below), whose sum is σ = 17209457496. Its totient is φ = 5475736392.

The previous prime is 11212222207. The next prime is 11212222243. The reversal of 11212222222 is 22222221211.

11212222222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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

11212222222 is a modest number, since divided by 222222 gives 11212 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 11212222222.

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, 65187253 + ... + 65187424.

It is an arithmetic number, because the mean of its divisors is an integer number (2151182187).

Almost surely, 2^11212222222 is an apocalyptic number.

11212222222 is a deficient number, since it is larger than the sum of its proper divisors (5997235274).

11212222222 is a wasteful number, since it uses less digits than its factorization.

11212222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130374722.

The product of its digits is 256, while the sum is 19.

Adding to 11212222222 its reverse (22222221211), we get a palindrome (33434443433).

The spelling of 11212222222 in words is "eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".