23021330421 has 8 divisors (see below), whose sum is σ = 30709479424. Its totient is φ = 15340367520.

The previous prime is 23021330413. The next prime is 23021330491. The reversal of 23021330421 is 12403312032.

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

It is not a de Polignac number, because 23021330421 - 2³ = 23021330413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021330401) 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, 1789045 + ... + 1801866.

It is an arithmetic number, because the mean of its divisors is an integer number (3838684928).

Almost surely, 2^23021330421 is an apocalyptic number.

It is an amenable number.

23021330421 is a deficient number, since it is larger than the sum of its proper divisors (7688149003).

23021330421 is a wasteful number, since it uses less digits than its factorization.

23021330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593051.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23021330421 its reverse (12403312032), we get a palindrome (35424642453).

The spelling of 23021330421 in words is "twenty-three billion, twenty-one million, three hundred thirty thousand, four hundred twenty-one".