1121112121222 has 4 divisors (see below), whose sum is σ = 1681668181836. Its totient is φ = 560556060610.

The previous prime is 1121112121219. The next prime is 1121112121249. The reversal of 1121112121222 is 2221212111211.

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 self number, because there is not a number n which added to its sum of digits gives 1121112121222.

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, 280278030304 + ... + 280278030307.

It is an arithmetic number, because the mean of its divisors is an integer number (420417045459).

Almost surely, 2^{1121112121222} is an apocalyptic number.

1121112121222 is a deficient number, since it is larger than the sum of its proper divisors (560556060614).

1121112121222 is an equidigital number, since it uses as much as digits as its factorization.

1121112121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560556060613.

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

Adding to 1121112121222 its reverse (2221212111211), we get a palindrome (3342324232433).

The spelling of 1121112121222 in words is "one trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twenty-two".