22040420023 has 4 divisors (see below), whose sum is σ = 22064145840. Its totient is φ = 22016694208.

The previous prime is 22040420009. The next prime is 22040420111. The reversal of 22040420023 is 32002404022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22040420023 - 2⁵ = 22040419991 is a prime.

It is a super-2 number, since 2×22040420023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040420923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11861515 + ... + 11863372.

It is an arithmetic number, because the mean of its divisors is an integer number (5516036460).

Almost surely, 2^22040420023 is an apocalyptic number.

22040420023 is a deficient number, since it is larger than the sum of its proper divisors (23725817).

22040420023 is an equidigital number, since it uses as much as digits as its factorization.

22040420023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23725816.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 22040420023 its reverse (32002404022), we get a palindrome (54042824045).

The spelling of 22040420023 in words is "twenty-two billion, forty million, four hundred twenty thousand, twenty-three".