1230111213 has 16 divisors (see below), whose sum is σ = 1720323840. Its totient is φ = 780929856.

The previous prime is 1230111203. The next prime is 1230111257. The reversal of 1230111213 is 3121110321.

It is a happy number.

It is not a de Polignac number, because 1230111213 - 2¹² = 1230107117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230111192 and 1230111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112678 + ... + 123111.

It is an arithmetic number, because the mean of its divisors is an integer number (107520240).

Almost surely, 2^1230111213 is an apocalyptic number.

It is an amenable number.

1230111213 is a deficient number, since it is larger than the sum of its proper divisors (490212627).

1230111213 is a wasteful number, since it uses less digits than its factorization.

1230111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235876.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1230111213 is about 35072.9413223357. The cubic root of 1230111213 is about 1071.4735609121.

Adding to 1230111213 its reverse (3121110321), we get a palindrome (4351221534).

The spelling of 1230111213 in words is "one billion, two hundred thirty million, one hundred eleven thousand, two hundred thirteen".