11211320 has 32 divisors (see below), whose sum is σ = 25351920. Its totient is φ = 4462080.

The previous prime is 11211293. The next prime is 11211331. The reversal of 11211320 is 2311211.

11211320 is nontrivially palindromic in base 9.

It is a super-2 number, since 2×11211320² = 251387392284800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9059 + ... + 10221.

Almost surely, 2^11211320 is an apocalyptic number.

11211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211320 is an abundant number, since it is smaller than the sum of its proper divisors (14140600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211320 is a wasteful number, since it uses less digits than its factorization.

11211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11211320 is about 3348.3309274921. The cubic root of 11211320 is about 223.8131413615.

Adding to 11211320 its reverse (2311211), we get a palindrome (13522531).

The spelling of 11211320 in words is "eleven million, two hundred eleven thousand, three hundred twenty".