2223121213 has 2 divisors, whose sum is σ = 2223121214. Its totient is φ = 2223121212.

The previous prime is 2223121193. The next prime is 2223121249. The reversal of 2223121213 is 3121213222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1807695289 + 415425924 = 42517^2 + 20382^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223121213 - 2²¹ = 2221024061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2223121253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111560606 + 1111560607.

It is an arithmetic number, because the mean of its divisors is an integer number (1111560607).

Almost surely, 2^2223121213 is an apocalyptic number.

It is an amenable number.

2223121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223121213 is an equidigital number, since it uses as much as digits as its factorization.

2223121213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 2223121213 is about 47149.9863520659. The cubic root of 2223121213 is about 1305.1318281607.

Adding to 2223121213 its reverse (3121213222), we get a palindrome (5344334435).

It can be divided in two parts, 22231212 and 13, that added together give a square (22231225 = 4715²).

The spelling of 2223121213 in words is "two billion, two hundred twenty-three million, one hundred twenty-one thousand, two hundred thirteen".