1112211201221 has 8 divisors (see below), whose sum is σ = 1113472851480. Its totient is φ = 1110949691392.

The previous prime is 1112211201197. The next prime is 1112211201263. The reversal of 1112211201221 is 1221021122111.

It can be written as a sum of positive squares in 4 ways, for example, as 110480452996 + 1001730748225 = 332386^2 + 1000865^2 .

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 1112211201221 - 2²⁶ = 1112144092357 is a prime.

It is a super-2 number, since 2×1112211201221² (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 1112211201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112211221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30576581 + ... + 30612933.

It is an arithmetic number, because the mean of its divisors is an integer number (139184106435).

Almost surely, 2^{1112211201221} is an apocalyptic number.

It is an amenable number.

1112211201221 is a deficient number, since it is larger than the sum of its proper divisors (1261650259).

1112211201221 is an equidigital number, since it uses as much as digits as its factorization.

1112211201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70215.

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

Adding to 1112211201221 its reverse (1221021122111), we get a palindrome (2333232323332).

The spelling of 1112211201221 in words is "one trillion, one hundred twelve billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".