11214521 has 4 divisors (see below), whose sum is σ = 11372544. Its totient is φ = 11056500.

The previous prime is 11214499. The next prime is 11214559. The reversal of 11214521 is 12541211.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11214521 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 11214521.

It is not an unprimeable number, because it can be changed into a prime (11214571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78905 + ... + 79046.

It is an arithmetic number, because the mean of its divisors is an integer number (2843136).

Almost surely, 2^11214521 is an apocalyptic number.

It is an amenable number.

11214521 is a deficient number, since it is larger than the sum of its proper divisors (158023).

11214521 is an equidigital number, since it uses as much as digits as its factorization.

11214521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158022.

The product of its digits is 80, while the sum is 17.

The square root of 11214521 is about 3348.8088927259. The cubic root of 11214521 is about 223.8344400041.

Adding to 11214521 its reverse (12541211), we get a palindrome (23755732).

The spelling of 11214521 in words is "eleven million, two hundred fourteen thousand, five hundred twenty-one".