1112201211221 has 8 divisors (see below), whose sum is σ = 1138130516160. Its totient is φ = 1086274822752.

The previous prime is 1112201211211. The next prime is 1112201211229. The reversal of 1112201211221 is 1221121022111.

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 1112201211221 - 2¹⁸ = 1112200949077 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 1112201211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112201211229) 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, 52121 + ... + 1492353.

It is an arithmetic number, because the mean of its divisors is an integer number (142266314520).

Almost surely, 2^{1112201211221} is an apocalyptic number.

It is an amenable number.

1112201211221 is a deficient number, since it is larger than the sum of its proper divisors (25929304939).

1112201211221 is a wasteful number, since it uses less digits than its factorization.

1112201211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458235.

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

Adding to 1112201211221 its reverse (1221121022111), we get a palindrome (2333322233332).

The spelling of 1112201211221 in words is "one trillion, one hundred twelve billion, two hundred one million, two hundred eleven thousand, two hundred twenty-one".