22240340221 has 16 divisors (see below), whose sum is σ = 24739830720. Its totient is φ = 19822302720.

The previous prime is 22240340071. The next prime is 22240340257. The reversal of 22240340221 is 12204304222.

It is not a de Polignac number, because 22240340221 - 2²⁹ = 21703469309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22240340192 and 22240340201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240343221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196141 + ... + 288013.

It is an arithmetic number, because the mean of its divisors is an integer number (1546239420).

Almost surely, 2^22240340221 is an apocalyptic number.

It is an amenable number.

22240340221 is a deficient number, since it is larger than the sum of its proper divisors (2499490499).

22240340221 is a wasteful number, since it uses less digits than its factorization.

22240340221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92316.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22240340221 its reverse (12204304222), we get a palindrome (34444644443).

The spelling of 22240340221 in words is "twenty-two billion, two hundred forty million, three hundred forty thousand, two hundred twenty-one".