112022221100021 has 4 divisors (see below), whose sum is σ = 112024005723372. Its totient is φ = 112020436476672.

The previous prime is 112022221100003. The next prime is 112022221100051. The reversal of 112022221100021 is 120001122220211.

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 108811727613796 + 3210493486225 = 10431286^2 + 1791785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112022221100021 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 (112022221100051) 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, 892217516 + ... + 892343061.

It is an arithmetic number, because the mean of its divisors is an integer number (28006001430843).

Almost surely, 2^{112022221100021} is an apocalyptic number.

It is an amenable number.

112022221100021 is a deficient number, since it is larger than the sum of its proper divisors (1784623351).

112022221100021 is an equidigital number, since it uses as much as digits as its factorization.

112022221100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784623350.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 112022221100021 its reverse (120001122220211), we get a palindrome (232023343320232).

The spelling of 112022221100021 in words is "one hundred twelve trillion, twenty-two billion, two hundred twenty-one million, one hundred thousand, twenty-one".