22042342021 has 8 divisors (see below), whose sum is σ = 26003869184. Its totient is φ = 18283970160.

The previous prime is 22042342019. The next prime is 22042342033. The reversal of 22042342021 is 12024324022.

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 22042342021 - 2¹ = 22042342019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22042341983 and 22042342001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042312021) 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, 50788590 + ... + 50789023.

It is an arithmetic number, because the mean of its divisors is an integer number (3250483648).

Almost surely, 2^22042342021 is an apocalyptic number.

It is an amenable number.

22042342021 is a deficient number, since it is larger than the sum of its proper divisors (3961527163).

22042342021 is a wasteful number, since it uses less digits than its factorization.

22042342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101577651.

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

Adding to 22042342021 its reverse (12024324022), we get a palindrome (34066666043).

The spelling of 22042342021 in words is "twenty-two billion, forty-two million, three hundred forty-two thousand, twenty-one".