22040020020 has 96 divisors (see below), whose sum is σ = 65033176320. Its totient is φ = 5566105600.

The previous prime is 22040020003. The next prime is 22040020027. The reversal of 22040020020 is 2002004022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22040019978 and 22040020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040020027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60316 + ... + 218444.

It is an arithmetic number, because the mean of its divisors is an integer number (677428920).

Almost surely, 2^22040020020 is an apocalyptic number.

22040020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22040020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32516588160).

22040020020 is an abundant number, since it is smaller than the sum of its proper divisors (42993156300).

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

22040020020 is a wasteful number, since it uses less digits than its factorization.

22040020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158265 (or 158263 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 22040020020 its reverse (2002004022), we get a palindrome (24042024042).

The spelling of 22040020020 in words is "twenty-two billion, forty million, twenty thousand, twenty".