1230332321021 has 4 divisors (see below), whose sum is σ = 1272757573500. Its totient is φ = 1187907068544.

The previous prime is 1230332321011. The next prime is 1230332321047. The reversal of 1230332321021 is 1201232330321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204742675225 + 1025589645796 = 452485^2 + 1012714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230332321021 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 (1230332321011) 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, 21212626196 + ... + 21212626253.

It is an arithmetic number, because the mean of its divisors is an integer number (318189393375).

Almost surely, 2^{1230332321021} is an apocalyptic number.

It is an amenable number.

1230332321021 is a deficient number, since it is larger than the sum of its proper divisors (42425252479).

1230332321021 is an equidigital number, since it uses as much as digits as its factorization.

1230332321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42425252478.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1230332321021 its reverse (1201232330321), we get a palindrome (2431564651342).

The spelling of 1230332321021 in words is "one trillion, two hundred thirty billion, three hundred thirty-two million, three hundred twenty-one thousand, twenty-one".