1230232021 has 4 divisors (see below), whose sum is σ = 1258842112. Its totient is φ = 1201621932.

The previous prime is 1230231983. The next prime is 1230232037. The reversal of 1230232021 is 1202320321.

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 1230232021 - 2¹⁵ = 1230199253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230231986 and 1230232004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230232051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14304981 + ... + 14305066.

It is an arithmetic number, because the mean of its divisors is an integer number (314710528).

Almost surely, 2^1230232021 is an apocalyptic number.

It is an amenable number.

1230232021 is a deficient number, since it is larger than the sum of its proper divisors (28610091).

1230232021 is an equidigital number, since it uses as much as digits as its factorization.

1230232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28610090.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1230232021 is about 35074.6635194124. The cubic root of 1230232021 is about 1071.5086358819.

Adding to 1230232021 its reverse (1202320321), we get a palindrome (2432552342).

The spelling of 1230232021 in words is "one billion, two hundred thirty million, two hundred thirty-two thousand, twenty-one".