1222111121111 has 8 divisors (see below), whose sum is σ = 1228702284000. Its totient is φ = 1215535129120.

The previous prime is 1222111121071. The next prime is 1222111121117. The reversal of 1222111121111 is 1111211112221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222111121111 - 2²⁶ = 1222044012247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222111121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222111121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631160 + ... + 3953421.

It is an arithmetic number, because the mean of its divisors is an integer number (153587785500).

Almost surely, 2^{1222111121111} is an apocalyptic number.

1222111121111 is a deficient number, since it is larger than the sum of its proper divisors (6591162889).

1222111121111 is an equidigital number, since it uses as much as digits as its factorization.

1222111121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7585449.

The product of its digits is 16, while the sum is 17.

Adding to 1222111121111 its reverse (1111211112221), we get a palindrome (2333322233332).

The spelling of 1222111121111 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, one hundred eleven".