112210010021 has 4 divisors (see below), whose sum is σ = 114049518444. Its totient is φ = 110370501600.

The previous prime is 112210009993. The next prime is 112210010051. The reversal of 112210010021 is 120010012211.

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 9656992900 + 102553017121 = 98270^2 + 320239^2 .

It is a cyclic number.

It is not a de Polignac number, because 112210010021 - 2¹⁸ = 112209747877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112210009984 and 112210010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112210010051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919754120 + ... + 919754241.

It is an arithmetic number, because the mean of its divisors is an integer number (28512379611).

Almost surely, 2^112210010021 is an apocalyptic number.

It is an amenable number.

112210010021 is a deficient number, since it is larger than the sum of its proper divisors (1839508423).

112210010021 is an equidigital number, since it uses as much as digits as its factorization.

112210010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839508422.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 112210010021 its reverse (120010012211), we get a palindrome (232220022232).

The spelling of 112210010021 in words is "one hundred twelve billion, two hundred ten million, ten thousand, twenty-one".