11111220222 has 16 divisors (see below), whose sum is σ = 22233052800. Its totient is φ = 3701971352.

The previous prime is 11111220199. The next prime is 11111220301. The reversal of 11111220222 is 22202211111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428538 + ... + 453725.

It is an arithmetic number, because the mean of its divisors is an integer number (1389565800).

Almost surely, 2^11111220222 is an apocalyptic number.

11111220222 is an abundant number, since it is smaller than the sum of its proper divisors (11121832578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111220222 is a wasteful number, since it uses less digits than its factorization.

11111220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884367.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11111220222 its reverse (22202211111), we get a palindrome (33313431333).

The spelling of 11111220222 in words is "eleven billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty-two".