22440341021 has 16 divisors (see below), whose sum is σ = 26163851904. Its totient is φ = 18849245184.

The previous prime is 22440340981. The next prime is 22440341041. The reversal of 22440341021 is 12014304422.

It is not a de Polignac number, because 22440341021 - 2¹⁰ = 22440339997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440341041) 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, 33440 + ... + 214473.

It is an arithmetic number, because the mean of its divisors is an integer number (1635240744).

Almost surely, 2^22440341021 is an apocalyptic number.

It is an amenable number.

22440341021 is a deficient number, since it is larger than the sum of its proper divisors (3723510883).

22440341021 is a wasteful number, since it uses less digits than its factorization.

22440341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248180.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22440341021 its reverse (12014304422), we get a palindrome (34454645443).

The spelling of 22440341021 in words is "twenty-two billion, four hundred forty million, three hundred forty-one thousand, twenty-one".