11872213 has 2 divisors, whose sum is σ = 11872214. Its totient is φ = 11872212.

The previous prime is 11872187. The next prime is 11872241. The reversal of 11872213 is 31227811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 3908529 = 2822^2 + 1977^2 .

It is a cyclic number.

It is not a de Polignac number, because 11872213 - 2⁵ = 11872181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11872243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5936106 + 5936107.

It is an arithmetic number, because the mean of its divisors is an integer number (5936107).

Almost surely, 2^11872213 is an apocalyptic number.

It is an amenable number.

11872213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11872213 is an equidigital number, since it uses as much as digits as its factorization.

11872213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 11872213 is about 3445.6077838315. The cubic root of 11872213 is about 228.1272822190.

The spelling of 11872213 in words is "eleven million, eight hundred seventy-two thousand, two hundred thirteen".