23221334140 has 96 divisors (see below), whose sum is σ = 51581940480. Its totient is φ = 8767589376.

The previous prime is 23221334137. The next prime is 23221334141. The reversal of 23221334140 is 4143312232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221334141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9743389 + ... + 9745771.

It is an arithmetic number, because the mean of its divisors is an integer number (537311880).

Almost surely, 2^23221334140 is an apocalyptic number.

23221334140 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 23221334140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25790970240).

23221334140 is an abundant number, since it is smaller than the sum of its proper divisors (28360606340).

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

23221334140 is a wasteful number, since it uses less digits than its factorization.

23221334140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23221334140 its reverse (4143312232), we get a palindrome (27364646372).

The spelling of 23221334140 in words is "twenty-three billion, two hundred twenty-one million, three hundred thirty-four thousand, one hundred forty".