1223100213 has 16 divisors (see below), whose sum is σ = 1670644800. Its totient is φ = 795521664.

The previous prime is 1223100191. The next prime is 1223100217. The reversal of 1223100213 is 3120013221.

It is a de Polignac number, because none of the positive numbers 2^k-1223100213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223100192 and 1223100201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223100217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117963 + ... + 127911.

It is an arithmetic number, because the mean of its divisors is an integer number (104415300).

Almost surely, 2^1223100213 is an apocalyptic number.

It is an amenable number.

1223100213 is a deficient number, since it is larger than the sum of its proper divisors (447544587).

1223100213 is an equidigital number, since it uses as much as digits as its factorization.

1223100213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10948.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1223100213 is about 34972.8496551253. The cubic root of 1223100213 is about 1069.4340655885.

Adding to 1223100213 its reverse (3120013221), we get a palindrome (4343113434).

The spelling of 1223100213 in words is "one billion, two hundred twenty-three million, one hundred thousand, two hundred thirteen".