12235213 has 4 divisors (see below), whose sum is σ = 12253180. Its totient is φ = 12217248.

The previous prime is 12235199. The next prime is 12235231. The reversal of 12235213 is 31253221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31253221 = 179 ⋅174599.

It can be written as a sum of positive squares in 2 ways, for example, as 925444 + 11309769 = 962^2 + 3363^2 .

It is a cyclic number.

It is not a de Polignac number, because 12235213 - 2¹³ = 12227021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12235253) 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, 7920 + ... + 9337.

It is an arithmetic number, because the mean of its divisors is an integer number (3063295).

Almost surely, 2^12235213 is an apocalyptic number.

It is an amenable number.

12235213 is a deficient number, since it is larger than the sum of its proper divisors (17967).

12235213 is an equidigital number, since it uses as much as digits as its factorization.

12235213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17966.

The product of its digits is 360, while the sum is 19.

The square root of 12235213 is about 3497.8869335643. The cubic root of 12235213 is about 230.4290228056.

Adding to 12235213 its reverse (31253221), we get a palindrome (43488434).

It can be divided in two parts, 12 and 235213, that added together give a square (235225 = 485²).

The spelling of 12235213 in words is "twelve million, two hundred thirty-five thousand, two hundred thirteen".