23221332402501 has 8 divisors (see below), whose sum is σ = 31545960999840. Its totient is φ = 15188796036752.

The previous prime is 23221332402377. The next prime is 23221332402589. The reversal of 23221332402501 is 10520423312232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23221332402501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221332402901) 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, 73023057711 + ... + 73023058028.

It is an arithmetic number, because the mean of its divisors is an integer number (3943245124980).

Almost surely, 2^{23221332402501} is an apocalyptic number.

It is an amenable number.

23221332402501 is a deficient number, since it is larger than the sum of its proper divisors (8324628597339).

23221332402501 is a wasteful number, since it uses less digits than its factorization.

23221332402501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146046115795.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 23221332402501 its reverse (10520423312232), we get a palindrome (33741755714733).

The spelling of 23221332402501 in words is "twenty-three trillion, two hundred twenty-one billion, three hundred thirty-two million, four hundred two thousand, five hundred one".