22042440020 has 24 divisors (see below), whose sum is σ = 46493050464. Its totient is φ = 8778132896.

The previous prime is 22042440019. The next prime is 22042440059. The reversal of 22042440020 is 2004424022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22042439974 and 22042440001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2423042 + ... + 2432121.

It is an arithmetic number, because the mean of its divisors is an integer number (1937210436).

Almost surely, 2^22042440020 is an apocalyptic number.

22042440020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22042440020 is an abundant number, since it is smaller than the sum of its proper divisors (24450610444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22042440020 is a wasteful number, since it uses less digits than its factorization.

22042440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4855399 (or 4855397 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22042440020 its reverse (2004424022), we get a palindrome (24046864042).

The spelling of 22042440020 in words is "twenty-two billion, forty-two million, four hundred forty thousand, twenty".