112201112122221 has 4 divisors (see below), whose sum is σ = 149601482829632. Its totient is φ = 74800741414812.

The previous prime is 112201112122199. The next prime is 112201112122243. The reversal of 112201112122221 is 122221211102211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (112201112122199) and next prime (112201112122243).

It is not a de Polignac number, because 112201112122221 - 2²⁷ = 112200977904493 is a prime.

It is a super-2 number, since 2×112201112122221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112201112122291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18700185353701 + ... + 18700185353706.

It is an arithmetic number, because the mean of its divisors is an integer number (37400370707408).

Almost surely, 2^{112201112122221} is an apocalyptic number.

It is an amenable number.

112201112122221 is a deficient number, since it is larger than the sum of its proper divisors (37400370707411).

112201112122221 is an equidigital number, since it uses as much as digits as its factorization.

112201112122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37400370707410.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 112201112122221 its reverse (122221211102211), we get a palindrome (234422323224432).

The spelling of 112201112122221 in words is "one hundred twelve trillion, two hundred one billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".