1122111112222 has 4 divisors (see below), whose sum is σ = 1683166668336. Its totient is φ = 561055556110.

The previous prime is 1122111112219. The next prime is 1122111112237. The reversal of 1122111112222 is 2222111112211.

It is a happy number.

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

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

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1122111112222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280527778054 + ... + 280527778057.

It is an arithmetic number, because the mean of its divisors is an integer number (420791667084).

Almost surely, 2^{1122111112222} is an apocalyptic number.

1122111112222 is a deficient number, since it is larger than the sum of its proper divisors (561055556114).

1122111112222 is an equidigital number, since it uses as much as digits as its factorization.

1122111112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561055556113.

The product of its digits is 64, while the sum is 19.

Adding to 1122111112222 its reverse (2222111112211), we get a palindrome (3344222224433).

The spelling of 1122111112222 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".