11501213 has 8 divisors (see below), whose sum is σ = 12180000. Its totient is φ = 10829808.

The previous prime is 11501209. The next prime is 11501221. The reversal of 11501213 is 31210511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11501213 - 2² = 11501209 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 (11501813) 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 7 ways as a sum of consecutive naturals, for example, 1538 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (1522500).

Almost surely, 2^11501213 is an apocalyptic number.

It is an amenable number.

11501213 is a deficient number, since it is larger than the sum of its proper divisors (678787).

11501213 is a wasteful number, since it uses less digits than its factorization.

11501213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11501213 is about 3391.3438339396. The cubic root of 11501213 is about 225.7258076042.

Adding to 11501213 its reverse (31210511), we get a palindrome (42711724).

The spelling of 11501213 in words is "eleven million, five hundred one thousand, two hundred thirteen".