11312211 has 8 divisors (see below), whose sum is σ = 15099840. Its totient is φ = 7533032.

The previous prime is 11312209. The next prime is 11312221. The reversal of 11312211 is 11221311.

11312211 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 11312211 - 2¹ = 11312209 is a prime.

It is a super-2 number, since 2×11312211² = 255932235417042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11312221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380 + ... + 5318.

It is an arithmetic number, because the mean of its divisors is an integer number (1887480).

Almost surely, 2^11312211 is an apocalyptic number.

11312211 is a deficient number, since it is larger than the sum of its proper divisors (3787629).

11312211 is a wasteful number, since it uses less digits than its factorization.

11312211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225.

The product of its digits is 12, while the sum is 12.

The square root of 11312211 is about 3363.3630490924. The cubic root of 11312211 is about 224.4825045104.

Adding to 11312211 its reverse (11221311), we get a palindrome (22533522).

It can be divided in two parts, 11312 and 211, that multiplied together give a palindrome (2386832).

The spelling of 11312211 in words is "eleven million, three hundred twelve thousand, two hundred eleven".