1223331213 has 32 divisors (see below), whose sum is σ = 1796328576. Its totient is φ = 735890688.

The previous prime is 1223331211. The next prime is 1223331229. The reversal of 1223331213 is 3121333221.

It is not a de Polignac number, because 1223331213 - 2¹ = 1223331211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223331213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223331211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 654306 + ... + 656172.

It is an arithmetic number, because the mean of its divisors is an integer number (56135268).

Almost surely, 2^1223331213 is an apocalyptic number.

1223331213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1223331213 is a deficient number, since it is larger than the sum of its proper divisors (572997363).

1223331213 is a wasteful number, since it uses less digits than its factorization.

1223331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253.

The product of its digits is 648, while the sum is 21.

The square root of 1223331213 is about 34976.1520610830. The cubic root of 1223331213 is about 1069.5013873326.

Adding to 1223331213 its reverse (3121333221), we get a palindrome (4344664434).

The spelling of 1223331213 in words is "one billion, two hundred twenty-three million, three hundred thirty-one thousand, two hundred thirteen".