11212022222 has 4 divisors (see below), whose sum is σ = 16818033336. Its totient is φ = 5606011110.

The previous prime is 11212022209. The next prime is 11212022231. The reversal of 11212022222 is 22222021211.

It is a happy number.

11212022222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11212022222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803005554 + ... + 2803005557.

It is an arithmetic number, because the mean of its divisors is an integer number (4204508334).

Almost surely, 2^11212022222 is an apocalyptic number.

11212022222 is a deficient number, since it is larger than the sum of its proper divisors (5606011114).

11212022222 is an equidigital number, since it uses as much as digits as its factorization.

11212022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606011113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11212022222 its reverse (22222021211), we get a palindrome (33434043433).

The spelling of 11212022222 in words is "eleven billion, two hundred twelve million, twenty-two thousand, two hundred twenty-two".