22123320020 has 24 divisors (see below), whose sum is σ = 46478107368. Its totient is φ = 8845683200.

The previous prime is 22123319927. The next prime is 22123320029. The reversal of 22123320020 is 2002332122.

It can be written as a sum of positive squares in 4 ways, for example, as 54434884 + 22068885136 = 7378^2 + 148556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123320029) 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, 177761 + ... + 275400.

It is an arithmetic number, because the mean of its divisors is an integer number (1936587807).

Almost surely, 2^22123320020 is an apocalyptic number.

22123320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22123320020 is an abundant number, since it is smaller than the sum of its proper divisors (24354787348).

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

22123320020 is a wasteful number, since it uses less digits than its factorization.

22123320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455611 (or 455609 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 22123320020 its reverse (2002332122), we get a palindrome (24125652142).

The spelling of 22123320020 in words is "twenty-two billion, one hundred twenty-three million, three hundred twenty thousand, twenty".