23740332221 has 16 divisors (see below), whose sum is σ = 24130626240. Its totient is φ = 23353505280.

The previous prime is 23740332169. The next prime is 23740332233. The reversal of 23740332221 is 12223304732.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23740332221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23740832221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12755831 + ... + 12757691.

It is an arithmetic number, because the mean of its divisors is an integer number (1508164140).

Almost surely, 2^23740332221 is an apocalyptic number.

It is an amenable number.

23740332221 is a deficient number, since it is larger than the sum of its proper divisors (390294019).

23740332221 is a wasteful number, since it uses less digits than its factorization.

23740332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684.

The product of its (nonzero) digits is 12096, while the sum is 29.

Adding to 23740332221 its reverse (12223304732), we get a palindrome (35963636953).

The spelling of 23740332221 in words is "twenty-three billion, seven hundred forty million, three hundred thirty-two thousand, two hundred twenty-one".