21230332301 has 4 divisors (see below), whose sum is σ = 21230630652. Its totient is φ = 21230033952.

The previous prime is 21230332289. The next prime is 21230332307. The reversal of 21230332301 is 10323303212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5083547401 + 16146784900 = 71299^2 + 127070^2 .

It is a cyclic number.

It is not a de Polignac number, because 21230332301 - 2³⁴ = 4050463117 is a prime.

It is a super-2 number, since 2×21230332301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230332307) 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, 26615 + ... + 207771.

It is an arithmetic number, because the mean of its divisors is an integer number (5307657663).

Almost surely, 2^21230332301 is an apocalyptic number.

It is an amenable number.

21230332301 is a deficient number, since it is larger than the sum of its proper divisors (298351).

21230332301 is a wasteful number, since it uses less digits than its factorization.

21230332301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298350.

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

Adding to 21230332301 its reverse (10323303212), we get a palindrome (31553635513).

The spelling of 21230332301 in words is "twenty-one billion, two hundred thirty million, three hundred thirty-two thousand, three hundred one".