22440120221 has 8 divisors (see below), whose sum is σ = 24435703200. Its totient is φ = 20525989680.

The previous prime is 22440120193. The next prime is 22440120281. The reversal of 22440120221 is 12202104422.

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 22440120221 - 2²⁶ = 22373011357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22440120193 and 22440120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440120281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20362535 + ... + 20363636.

It is an arithmetic number, because the mean of its divisors is an integer number (3054462900).

Almost surely, 2^22440120221 is an apocalyptic number.

It is an amenable number.

22440120221 is a deficient number, since it is larger than the sum of its proper divisors (1995582979).

22440120221 is a wasteful number, since it uses less digits than its factorization.

22440120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40726219.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22440120221 its reverse (12202104422), we get a palindrome (34642224643).

The spelling of 22440120221 in words is "twenty-two billion, four hundred forty million, one hundred twenty thousand, two hundred twenty-one".