112112001111221 has 8 divisors (see below), whose sum is σ = 113951571075384. Its totient is φ = 110272484963520.

The previous prime is 112112001111217. The next prime is 112112001111247. The reversal of 112112001111221 is 122111100211211.

It can be written as a sum of positive squares in 4 ways, for example, as 2003600616196 + 110108400495025 = 1415486^2 + 10493255^2 .

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 112112001111221 - 2² = 112112001111217 is a prime.

It is a super-2 number, since 2×112112001111221² (a number of 29 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 112112001111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112001114221) 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, 9242750 + ... + 17596943.

It is an arithmetic number, because the mean of its divisors is an integer number (14243946384423).

Almost surely, 2^{112112001111221} is an apocalyptic number.

It is an amenable number.

112112001111221 is a deficient number, since it is larger than the sum of its proper divisors (1839569964163).

112112001111221 is an equidigital number, since it uses as much as digits as its factorization.

112112001111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26908231.

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

Adding to 112112001111221 its reverse (122111100211211), we get a palindrome (234223101322432).

The spelling of 112112001111221 in words is "one hundred twelve trillion, one hundred twelve billion, one million, one hundred eleven thousand, two hundred twenty-one".