22112100221021 has 8 divisors (see below), whose sum is σ = 22382775288384. Its totient is φ = 21842296894080.

The previous prime is 22112100221011. The next prime is 22112100221083. The reversal of 22112100221021 is 12012200121122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22112100221021 - 2⁶ = 22112100220957 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 (22112100221011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217884065 + ... + 217985526.

It is an arithmetic number, because the mean of its divisors is an integer number (2797846911048).

Almost surely, 2^{22112100221021} is an apocalyptic number.

It is an amenable number.

22112100221021 is a deficient number, since it is larger than the sum of its proper divisors (270675067363).

22112100221021 is an equidigital number, since it uses as much as digits as its factorization.

22112100221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435870211.

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

Adding to 22112100221021 its reverse (12012200121122), we get a palindrome (34124300342143).

The spelling of 22112100221021 in words is "twenty-two trillion, one hundred twelve billion, one hundred million, two hundred twenty-one thousand, twenty-one".