23221004224 has 56 divisors (see below), whose sum is σ = 50729540400. Its totient is φ = 10458132480.

The previous prime is 23221004201. The next prime is 23221004227. The reversal of 23221004224 is 42240012232.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 23221004195 and 23221004204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221004227) 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, 74569 + ... + 228040.

It is an arithmetic number, because the mean of its divisors is an integer number (905884650).

Almost surely, 2^23221004224 is an apocalyptic number.

It is an amenable number.

23221004224 is an abundant number, since it is smaller than the sum of its proper divisors (27508536176).

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

23221004224 is a wasteful number, since it uses less digits than its factorization.

23221004224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302741 (or 302731 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 23221004224 its reverse (42240012232), we get a palindrome (65461016456).

The spelling of 23221004224 in words is "twenty-three billion, two hundred twenty-one million, four thousand, two hundred twenty-four".