1112210112221 has 16 divisors (see below), whose sum is σ = 1248744663936. Its totient is φ = 983859379776.

The previous prime is 1112210112179. The next prime is 1112210112239. The reversal of 1112210112221 is 1222110122111.

It is not a de Polignac number, because 1112210112221 - 2³⁸ = 837332205277 is a prime.

It is a super-2 number, since 2×1112210112221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112210112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112210112271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18740585 + ... + 18799838.

It is an arithmetic number, because the mean of its divisors is an integer number (78046541496).

Almost surely, 2^{1112210112221} is an apocalyptic number.

It is an amenable number.

1112210112221 is a deficient number, since it is larger than the sum of its proper divisors (136534551715).

1112210112221 is a wasteful number, since it uses less digits than its factorization.

1112210112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37540532.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1112210112221 its reverse (1222110122111), we get a palindrome (2334320234332).

The spelling of 1112210112221 in words is "one trillion, one hundred twelve billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-one".