11123321331 has 8 divisors (see below), whose sum is σ = 14831630784. Its totient is φ = 7415279720.

The previous prime is 11123321303. The next prime is 11123321347. The reversal of 11123321331 is 13312332111.

It is a happy number.

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 11123321331 - 2⁵ = 11123321299 is a prime.

It is a super-2 number, since 2×11123321331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11123321298 and 11123321307.

It is not an unprimeable number, because it can be changed into a prime (11123321381) 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, 69916 + ... + 164726.

It is an arithmetic number, because the mean of its divisors is an integer number (1853953848).

Almost surely, 2^11123321331 is an apocalyptic number.

11123321331 is a deficient number, since it is larger than the sum of its proper divisors (3708309453).

11123321331 is an equidigital number, since it uses as much as digits as its factorization.

11123321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133921.

The product of its digits is 324, while the sum is 21.

Adding to 11123321331 its reverse (13312332111), we get a palindrome (24435653442).

The spelling of 11123321331 in words is "eleven billion, one hundred twenty-three million, three hundred twenty-one thousand, three hundred thirty-one".