112122222221 has 4 divisors (see below), whose sum is σ = 116997101472. Its totient is φ = 107247342972.

The previous prime is 112122222217. The next prime is 112122222241. The reversal of 112122222221 is 122222221211.

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 a cyclic number.

It is not a de Polignac number, because 112122222221 - 2² = 112122222217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112122222193 and 112122222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122222241) 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, 2437439591 + ... + 2437439636.

It is an arithmetic number, because the mean of its divisors is an integer number (29249275368).

Almost surely, 2^112122222221 is an apocalyptic number.

It is an amenable number.

112122222221 is a deficient number, since it is larger than the sum of its proper divisors (4874879251).

112122222221 is an equidigital number, since it uses as much as digits as its factorization.

112122222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874879250.

The product of its digits is 256, while the sum is 20.

Adding to 112122222221 its reverse (122222221211), we get a palindrome (234344443432).

The spelling of 112122222221 in words is "one hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".