21330232301 has 4 divisors (see below), whose sum is σ = 24377408352. Its totient is φ = 18283056252.

The previous prime is 21330232249. The next prime is 21330232307. The reversal of 21330232301 is 10323203312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21330232301 - 2⁶ = 21330232237 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 (21330232307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523588015 + ... + 1523588028.

It is an arithmetic number, because the mean of its divisors is an integer number (6094352088).

Almost surely, 2^21330232301 is an apocalyptic number.

It is an amenable number.

21330232301 is a deficient number, since it is larger than the sum of its proper divisors (3047176051).

21330232301 is an equidigital number, since it uses as much as digits as its factorization.

21330232301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047176050.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21330232301 its reverse (10323203312), we get a palindrome (31653435613).

The spelling of 21330232301 in words is "twenty-one billion, three hundred thirty million, two hundred thirty-two thousand, three hundred one".