11011213 has 6 divisors (see below), whose sum is σ = 11404874. Its totient is φ = 10630704.

The previous prime is 11011211. The next prime is 11011243. The reversal of 11011213 is 31211011.

It can be written as a sum of positive squares in 3 ways, for example, as 4052169 + 6959044 = 2013^2 + 2638^2 .

It is not a de Polignac number, because 11011213 - 2¹ = 11011211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5706 + ... + 7387.

Almost surely, 2^11011213 is an apocalyptic number.

It is an amenable number.

11011213 is a deficient number, since it is larger than the sum of its proper divisors (393661).

11011213 is an equidigital number, since it uses as much as digits as its factorization.

11011213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151 (or 13122 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 11011213 is about 3318.3147831392. The cubic root of 11011213 is about 222.4735515421.

Adding to 11011213 its reverse (31211011), we get a palindrome (42222224).

The spelling of 11011213 in words is "eleven million, eleven thousand, two hundred thirteen".