112212201221 has 16 divisors (see below), whose sum is σ = 118578263040. Its totient is φ = 106013631360.

The previous prime is 112212201187. The next prime is 112212201229. The reversal of 112212201221 is 122102212211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112212201221 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 112212201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112212201229) 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, 9776516 + ... + 9787986.

It is an arithmetic number, because the mean of its divisors is an integer number (7411141440).

Almost surely, 2^112212201221 is an apocalyptic number.

It is an amenable number.

112212201221 is a deficient number, since it is larger than the sum of its proper divisors (6366061819).

112212201221 is a wasteful number, since it uses less digits than its factorization.

112212201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18724.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 112212201221 its reverse (122102212211), we get a palindrome (234314413432).

The spelling of 112212201221 in words is "one hundred twelve billion, two hundred twelve million, two hundred one thousand, two hundred twenty-one".