112012112021221 has 4 divisors (see below), whose sum is σ = 112013208679500. Its totient is φ = 112011015362944.

The previous prime is 112012112021197. The next prime is 112012112021279. The reversal of 112012112021221 is 122120211210211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18662486400100 + 93349625621121 = 4320010^2 + 9661761^2 .

It is a cyclic number.

It is not a de Polignac number, because 112012112021221 - 2¹⁵ = 112012111988453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012112091221) 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, 548175916 + ... + 548380213.

It is an arithmetic number, because the mean of its divisors is an integer number (28003302169875).

Almost surely, 2^{112012112021221} is an apocalyptic number.

It is an amenable number.

112012112021221 is a deficient number, since it is larger than the sum of its proper divisors (1096658279).

112012112021221 is a wasteful number, since it uses less digits than its factorization.

112012112021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096658278.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112012112021221 its reverse (122120211210211), we get a palindrome (234132323231432).

The spelling of 112012112021221 in words is "one hundred twelve trillion, twelve billion, one hundred twelve million, twenty-one thousand, two hundred twenty-one".