13022213 has 4 divisors (see below), whose sum is σ = 13168620. Its totient is φ = 12875808.

The previous prime is 13022171. The next prime is 13022231. The reversal of 13022213 is 31222031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31222031 = 1409 ⋅22159.

It can be written as a sum of positive squares in 2 ways, for example, as 8282884 + 4739329 = 2878^2 + 2177^2 .

It is not a de Polignac number, because 13022213 - 2¹⁰ = 13021189 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13022293) 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, 73070 + ... + 73247.

It is an arithmetic number, because the mean of its divisors is an integer number (3292155).

Almost surely, 2^13022213 is an apocalyptic number.

It is an amenable number.

13022213 is a deficient number, since it is larger than the sum of its proper divisors (146407).

13022213 is an equidigital number, since it uses as much as digits as its factorization.

13022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146406.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13022213 is about 3608.6303495925. The cubic root of 13022213 is about 235.2673161495.

Adding to 13022213 its reverse (31222031), we get a palindrome (44244244).

The spelling of 13022213 in words is "thirteen million, twenty-two thousand, two hundred thirteen".