112221212011 has 4 divisors (see below), whose sum is σ = 113028559000. Its totient is φ = 111413865024.

The previous prime is 112221211997. The next prime is 112221212017. The reversal of 112221212011 is 110212122211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110212122211 = 50441 ⋅2184971.

It is a cyclic number.

It is not a de Polignac number, because 112221212011 - 2⁹ = 112221211499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112221212017) 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, 403673286 + ... + 403673563.

It is an arithmetic number, because the mean of its divisors is an integer number (28257139750).

Almost surely, 2^112221212011 is an apocalyptic number.

112221212011 is a deficient number, since it is larger than the sum of its proper divisors (807346989).

112221212011 is an equidigital number, since it uses as much as digits as its factorization.

112221212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807346988.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112221212011 its reverse (110212122211), we get a palindrome (222433334222).

The spelling of 112221212011 in words is "one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, eleven".