22440234021 has 8 divisors (see below), whose sum is σ = 30650075904. Its totient is φ = 14595274080.

The previous prime is 22440233957. The next prime is 22440234023. The reversal of 22440234021 is 12043204422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22440234021 - 2⁶ = 22440233957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22440233982 and 22440234000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440234023) 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, 91220341 + ... + 91220586.

It is an arithmetic number, because the mean of its divisors is an integer number (3831259488).

Almost surely, 2^22440234021 is an apocalyptic number.

It is an amenable number.

22440234021 is a deficient number, since it is larger than the sum of its proper divisors (8209841883).

22440234021 is a wasteful number, since it uses less digits than its factorization.

22440234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182440971.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22440234021 its reverse (12043204422), we get a palindrome (34483438443).

The spelling of 22440234021 in words is "twenty-two billion, four hundred forty million, two hundred thirty-four thousand, twenty-one".