22112110100221 has 4 divisors (see below), whose sum is σ = 22116864374944. Its totient is φ = 22107355825500.

The previous prime is 22112110100207. The next prime is 22112110100237. The reversal of 22112110100221 is 12200101121122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22112110100221 - 2¹¹ = 22112110098173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112110100195 and 22112110100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112110100921) 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, 2377130385 + ... + 2377139686.

It is an arithmetic number, because the mean of its divisors is an integer number (5529216093736).

Almost surely, 2^{22112110100221} is an apocalyptic number.

It is an amenable number.

22112110100221 is a deficient number, since it is larger than the sum of its proper divisors (4754274723).

22112110100221 is an equidigital number, since it uses as much as digits as its factorization.

22112110100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754274722.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22112110100221 its reverse (12200101121122), we get a palindrome (34312211221343).

The spelling of 22112110100221 in words is "twenty-two trillion, one hundred twelve billion, one hundred ten million, one hundred thousand, two hundred twenty-one".