22210112221 has 4 divisors (see below), whose sum is σ = 24229213344. Its totient is φ = 20191011100.

The previous prime is 22210112209. The next prime is 22210112233. The reversal of 22210112221 is 12221101222.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (22210112209) and next prime (22210112233).

It is a cyclic number.

It is not a de Polignac number, because 22210112221 - 2¹³ = 22210104029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22210112195 and 22210112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210112291) 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, 1009550545 + ... + 1009550566.

It is an arithmetic number, because the mean of its divisors is an integer number (6057303336).

Almost surely, 2^22210112221 is an apocalyptic number.

It is an amenable number.

22210112221 is a deficient number, since it is larger than the sum of its proper divisors (2019101123).

22210112221 is a wasteful number, since it uses less digits than its factorization.

22210112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019101122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22210112221 its reverse (12221101222), we get a palindrome (34431213443).

It can be divided in two parts, 22210 and 112221, that added together give a palindrome (134431).

The spelling of 22210112221 in words is "twenty-two billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-one".