11001213 has 12 divisors (see below), whose sum is σ = 15920320. Its totient is φ = 7320456.

The previous prime is 11001197. The next prime is 11001217. The reversal of 11001213 is 31210011.

It is not a de Polignac number, because 11001213 - 2⁴ = 11001197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001195 and 11001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7020 + ... + 8442.

Almost surely, 2^11001213 is an apocalyptic number.

It is an amenable number.

11001213 is a deficient number, since it is larger than the sum of its proper divisors (4919107).

11001213 is a wasteful number, since it uses less digits than its factorization.

11001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2285 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 11001213 is about 3316.8076519449. The cubic root of 11001213 is about 222.4061835681.

Adding to 11001213 its reverse (31210011), we get a palindrome (42211224).

The spelling of 11001213 in words is "eleven million, one thousand, two hundred thirteen".