11712213 has 12 divisors (see below), whose sum is σ = 17122560. Its totient is φ = 7713576.

The previous prime is 11712191. The next prime is 11712223. The reversal of 11712213 is 31221711.

It is a happy number.

It is not a de Polignac number, because 11712213 - 2⁸ = 11711957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11712223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7093 + ... + 8586.

It is an arithmetic number, because the mean of its divisors is an integer number (1426880).

Almost surely, 2^11712213 is an apocalyptic number.

It is an amenable number.

11712213 is a deficient number, since it is larger than the sum of its proper divisors (5410347).

11712213 is a wasteful number, since it uses less digits than its factorization.

11712213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768 (or 15765 counting only the distinct ones).

The product of its digits is 84, while the sum is 18.

The square root of 11712213 is about 3422.3110612567. The cubic root of 11712213 is about 227.0978315202.

Adding to 11712213 its reverse (31221711), we get a palindrome (42933924).

The spelling of 11712213 in words is "eleven million, seven hundred twelve thousand, two hundred thirteen".