112200020021 has 4 divisors (see below), whose sum is σ = 112208336652. Its totient is φ = 112191703392.

The previous prime is 112200019963. The next prime is 112200020033. The reversal of 112200020021 is 120020002211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120020002211 = 199 ⋅603115589.

It can be written as a sum of positive squares in 2 ways, for example, as 82929600625 + 29270419396 = 287975^2 + 171086^2 .

It is a cyclic number.

It is not a de Polignac number, because 112200020021 - 2¹⁴ = 112200003637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112200019984 and 112200020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112200026021) 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, 4138046 + ... + 4165071.

It is an arithmetic number, because the mean of its divisors is an integer number (28052084163).

Almost surely, 2^112200020021 is an apocalyptic number.

It is an amenable number.

112200020021 is a deficient number, since it is larger than the sum of its proper divisors (8316631).

112200020021 is an equidigital number, since it uses as much as digits as its factorization.

112200020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316630.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 112200020021 its reverse (120020002211), we get a palindrome (232220022232).

The spelling of 112200020021 in words is "one hundred twelve billion, two hundred million, twenty thousand, twenty-one".