11312223011 has 4 divisors (see below), whose sum is σ = 11977647912. Its totient is φ = 10646798112.

The previous prime is 11312223001. The next prime is 11312223029. The reversal of 11312223011 is 11032221311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11312223011 - 2⁶ = 11312222947 is a prime.

It is a super-2 number, since 2×11312223011² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 665424883 = 11312223011 / (1 + 1 + 3 + 1 + 2 + 2 + 2 + 3 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312223001) 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, 332712425 + ... + 332712458.

It is an arithmetic number, because the mean of its divisors is an integer number (2994411978).

Almost surely, 2^11312223011 is an apocalyptic number.

11312223011 is a deficient number, since it is larger than the sum of its proper divisors (665424901).

11312223011 is an equidigital number, since it uses as much as digits as its factorization.

11312223011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665424900.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11312223011 its reverse (11032221311), we get a palindrome (22344444322).

The spelling of 11312223011 in words is "eleven billion, three hundred twelve million, two hundred twenty-three thousand, eleven".