1230113221 has 4 divisors (see below), whose sum is σ = 1232967744. Its totient is φ = 1227258700.

The previous prime is 1230113207. The next prime is 1230113249. The reversal of 1230113221 is 1223110321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1223110321 = 2593 ⋅471697.

It is a cyclic number.

It is not a de Polignac number, because 1230113221 - 2¹¹ = 1230111173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230113195 and 1230113204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230113921) 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, 1426615 + ... + 1427476.

It is an arithmetic number, because the mean of its divisors is an integer number (308241936).

Almost surely, 2^1230113221 is an apocalyptic number.

It is an amenable number.

1230113221 is a deficient number, since it is larger than the sum of its proper divisors (2854523).

1230113221 is an equidigital number, since it uses as much as digits as its factorization.

1230113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854522.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1230113221 is about 35072.9699483805. The cubic root of 1230113221 is about 1071.4741439266.

Adding to 1230113221 its reverse (1223110321), we get a palindrome (2453223542).

The spelling of 1230113221 in words is "one billion, two hundred thirty million, one hundred thirteen thousand, two hundred twenty-one".