23221310421 has 8 divisors (see below), whose sum is σ = 31147147584. Its totient is φ = 15388173440.

The previous prime is 23221310419. The next prime is 23221310459. The reversal of 23221310421 is 12401312232.

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

It is a cyclic number.

It is not a de Polignac number, because 23221310421 - 2¹ = 23221310419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221310471) 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, 23174460 + ... + 23175461.

It is an arithmetic number, because the mean of its divisors is an integer number (3893393448).

Almost surely, 2^23221310421 is an apocalyptic number.

It is an amenable number.

23221310421 is a deficient number, since it is larger than the sum of its proper divisors (7925837163).

23221310421 is a wasteful number, since it uses less digits than its factorization.

23221310421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46350091.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 23221310421 its reverse (12401312232), we get a palindrome (35622622653).

The spelling of 23221310421 in words is "twenty-three billion, two hundred twenty-one million, three hundred ten thousand, four hundred twenty-one".