112220100221 has 4 divisors (see below), whose sum is σ = 112374461472. Its totient is φ = 112065738972.

The previous prime is 112220100173. The next prime is 112220100233. The reversal of 112220100221 is 122001022211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122001022211 = 16661 ⋅7322551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112220100221 is a prime.

It is a super-2 number, since 2×112220100221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112220100196 and 112220100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112220100721) 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, 77179535 + ... + 77180988.

It is an arithmetic number, because the mean of its divisors is an integer number (28093615368).

Almost surely, 2^112220100221 is an apocalyptic number.

It is an amenable number.

112220100221 is a deficient number, since it is larger than the sum of its proper divisors (154361251).

112220100221 is an equidigital number, since it uses as much as digits as its factorization.

112220100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154361250.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 112220100221 its reverse (122001022211), we get a palindrome (234221122432).

The spelling of 112220100221 in words is "one hundred twelve billion, two hundred twenty million, one hundred thousand, two hundred twenty-one".