1230232320221 has 4 divisors (see below), whose sum is σ = 1230237576444. Its totient is φ = 1230227064000.

The previous prime is 1230232320193. The next prime is 1230232320257. The reversal of 1230232320221 is 1220232320321.

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 865886080900 + 364346239321 = 930530^2 + 603611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230232320221 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 (1230235320221) 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, 2259830 + ... + 2750871.

It is an arithmetic number, because the mean of its divisors is an integer number (307559394111).

Almost surely, 2^{1230232320221} is an apocalyptic number.

It is an amenable number.

1230232320221 is a deficient number, since it is larger than the sum of its proper divisors (5256223).

1230232320221 is an equidigital number, since it uses as much as digits as its factorization.

1230232320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5256222.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1230232320221 its reverse (1220232320321), we get a palindrome (2450464640542).

The spelling of 1230232320221 in words is "one trillion, two hundred thirty billion, two hundred thirty-two million, three hundred twenty thousand, two hundred twenty-one".