112120012011221 has 4 divisors (see below), whose sum is σ = 112120033444512. Its totient is φ = 112119990577932.

The previous prime is 112120012011169. The next prime is 112120012011253. The reversal of 112120012011221 is 122110210021211.

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 112120012011221 - 2¹⁸ = 112120011749077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112120012011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112120012011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2881520 + ... + 15249366.

It is an arithmetic number, because the mean of its divisors is an integer number (28030008361128).

Almost surely, 2^{112120012011221} is an apocalyptic number.

It is an amenable number.

112120012011221 is a deficient number, since it is larger than the sum of its proper divisors (21433291).

112120012011221 is an equidigital number, since it uses as much as digits as its factorization.

112120012011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21433290.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 112120012011221 its reverse (122110210021211), we get a palindrome (234230222032432).

The spelling of 112120012011221 in words is "one hundred twelve trillion, one hundred twenty billion, twelve million, eleven thousand, two hundred twenty-one".