22232244223221 has 32 divisors (see below), whose sum is σ = 30629723013120. Its totient is φ = 14329091160000.

The previous prime is 22232244223193. The next prime is 22232244223243. The reversal of 22232244223221 is 12232244223222.

It is not a de Polignac number, because 22232244223221 - 2¹³ = 22232244215029 is a prime.

It is a super-2 number, since 2×22232244223221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232244223261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406033596 + ... + 406088346.

It is an arithmetic number, because the mean of its divisors is an integer number (957178844160).

Almost surely, 2^{22232244223221} is an apocalyptic number.

It is an amenable number.

22232244223221 is a deficient number, since it is larger than the sum of its proper divisors (8397478789899).

22232244223221 is a wasteful number, since it uses less digits than its factorization.

22232244223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59057.

The product of its digits is 73728, while the sum is 33.

Adding to 22232244223221 its reverse (12232244223222), we get a palindrome (34464488446443).

Subtracting from 22232244223221 its reverse (12232244223222), we obtain a palindrome (9999999999999).

The spelling of 22232244223221 in words is "twenty-two trillion, two hundred thirty-two billion, two hundred forty-four million, two hundred twenty-three thousand, two hundred twenty-one".