22210112111221 has 8 divisors (see below), whose sum is σ = 23528767780224. Its totient is φ = 20892809607360.

The previous prime is 22210112111203. The next prime is 22210112111269. The reversal of 22210112111221 is 12211121101222.

It is a happy number.

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 22210112111221 - 2¹⁷ = 22210111980149 is a prime.

It is a super-2 number, since 2×22210112111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210112111821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338257485 + ... + 338323138.

It is an arithmetic number, because the mean of its divisors is an integer number (2941095972528).

Almost surely, 2^{22210112111221} is an apocalyptic number.

It is an amenable number.

22210112111221 is a deficient number, since it is larger than the sum of its proper divisors (1318655669003).

22210112111221 is a wasteful number, since it uses less digits than its factorization.

22210112111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676582571.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22210112111221 its reverse (12211121101222), we get a palindrome (34421233212443).

The spelling of 22210112111221 in words is "twenty-two trillion, two hundred ten billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty-one".