22123404243 has 24 divisors (see below), whose sum is σ = 35100449280. Its totient is φ = 13365166320.

The previous prime is 22123404217. The next prime is 22123404269. The reversal of 22123404243 is 34240432122.

22123404243 is a `hidden beast` number, since 2 + 2 + 1 + 234 + 0 + 424 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (22123404217) and next prime (22123404269).

It is not a de Polignac number, because 22123404243 - 2⁵ = 22123404211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22123404643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2808603 + ... + 2816468.

It is an arithmetic number, because the mean of its divisors is an integer number (1462518720).

Almost surely, 2^22123404243 is an apocalyptic number.

22123404243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22123404243 is a deficient number, since it is larger than the sum of its proper divisors (12977045037).

22123404243 is a wasteful number, since it uses less digits than its factorization.

22123404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625119 (or 5625116 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 22123404243 its reverse (34240432122), we get a palindrome (56363836365).

The spelling of 22123404243 in words is "twenty-two billion, one hundred twenty-three million, four hundred four thousand, two hundred forty-three".