22143312020 has 48 divisors (see below), whose sum is σ = 47669368320. Its totient is φ = 8636823936.

The previous prime is 22143312019. The next prime is 22143312043. The reversal of 22143312020 is 2021334122.

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 = 22143311983 and 22143312001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108701 + ... + 236859.

It is an arithmetic number, because the mean of its divisors is an integer number (993111840).

Almost surely, 2^22143312020 is an apocalyptic number.

22143312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22143312020 is an abundant number, since it is smaller than the sum of its proper divisors (25526056300).

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

22143312020 is a wasteful number, since it uses less digits than its factorization.

22143312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128384 (or 128382 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22143312020 its reverse (2021334122), we get a palindrome (24164646142).

The spelling of 22143312020 in words is "twenty-two billion, one hundred forty-three million, three hundred twelve thousand, twenty".