11320621 has 16 divisors (see below), whose sum is σ = 12597760. Its totient is φ = 10108800.

The previous prime is 11320609. The next prime is 11320649. The reversal of 11320621 is 12602311.

It is not a de Polignac number, because 11320621 - 2¹⁵ = 11287853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11320595 and 11320604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74896 + ... + 75046.

It is an arithmetic number, because the mean of its divisors is an integer number (787360).

Almost surely, 2^11320621 is an apocalyptic number.

It is an amenable number.

11320621 is a deficient number, since it is larger than the sum of its proper divisors (1277139).

11320621 is a wasteful number, since it uses less digits than its factorization.

11320621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 11320621 is about 3364.6130535323. The cubic root of 11320621 is about 224.5381208176.

Adding to 11320621 its reverse (12602311), we get a palindrome (23922932).

The spelling of 11320621 in words is "eleven million, three hundred twenty thousand, six hundred twenty-one".