112100221 has 4 divisors (see below), whose sum is σ = 112157500. Its totient is φ = 112042944.

The previous prime is 112100213. The next prime is 112100231. The reversal of 112100221 is 122001211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122001211 = 5591 ⋅21821.

It can be written as a sum of positive squares in 2 ways, for example, as 99780121 + 12320100 = 9989^2 + 3510^2 .

It is a cyclic number.

It is not a de Polignac number, because 112100221 - 2³ = 112100213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112100198 and 112100207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112100201) 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, 25596 + ... + 29653.

It is an arithmetic number, because the mean of its divisors is an integer number (28039375).

Almost surely, 2^112100221 is an apocalyptic number.

It is an amenable number.

112100221 is a deficient number, since it is larger than the sum of its proper divisors (57279).

112100221 is an equidigital number, since it uses as much as digits as its factorization.

112100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57278.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 112100221 is about 10587.7391826584. The cubic root of 112100221 is about 482.1721878683.

Adding to 112100221 its reverse (122001211), we get a palindrome (234101432).

The spelling of 112100221 in words is "one hundred twelve million, one hundred thousand, two hundred twenty-one".