11522213 has 4 divisors (see below), whose sum is σ = 11544768. Its totient is φ = 11499660.

The previous prime is 11522197. The next prime is 11522219. The reversal of 11522213 is 31222511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31222511 = 631 ⋅49481.

It is a cyclic number.

It is not a de Polignac number, because 11522213 - 2⁴ = 11522197 is a prime.

It is a super-2 number, since 2×11522213² = 265522784834738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11522191 and 11522200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11522219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10493 + ... + 11538.

It is an arithmetic number, because the mean of its divisors is an integer number (2886192).

Almost surely, 2^11522213 is an apocalyptic number.

It is an amenable number.

11522213 is a deficient number, since it is larger than the sum of its proper divisors (22555).

11522213 is an equidigital number, since it uses as much as digits as its factorization.

11522213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22554.

The product of its digits is 120, while the sum is 17.

The square root of 11522213 is about 3394.4385397294. The cubic root of 11522213 is about 225.8631078995.

Adding to 11522213 its reverse (31222511), we get a palindrome (42744724).

The spelling of 11522213 in words is "eleven million, five hundred twenty-two thousand, two hundred thirteen".