112231122221 has 4 divisors (see below), whose sum is σ = 112231846944. Its totient is φ = 112230397500.

The previous prime is 112231122217. The next prime is 112231122281. The reversal of 112231122221 is 122221132211.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 112231122221 - 2² = 112231122217 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 = 112231122193 and 112231122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112231122281) 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, 25985 + ... + 474486.

It is an arithmetic number, because the mean of its divisors is an integer number (28057961736).

Almost surely, 2^112231122221 is an apocalyptic number.

It is an amenable number.

112231122221 is a deficient number, since it is larger than the sum of its proper divisors (724723).

112231122221 is an equidigital number, since it uses as much as digits as its factorization.

112231122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724722.

The product of its digits is 192, while the sum is 20.

Adding to 112231122221 its reverse (122221132211), we get a palindrome (234452254432).

The spelling of 112231122221 in words is "one hundred twelve billion, two hundred thirty-one million, one hundred twenty-two thousand, two hundred twenty-one".