11331021123 has 8 divisors (see below), whose sum is σ = 16786698000. Its totient is φ = 7554014064.

The previous prime is 11331021077. The next prime is 11331021131. The reversal of 11331021123 is 32112013311.

It is not a de Polignac number, because 11331021123 - 2⁸ = 11331020867 is a prime.

It is a super-2 number, since 2×11331021123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11331021096 and 11331021105.

It is not an unprimeable number, because it can be changed into a prime (11331021133) 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, 209833698 + ... + 209833751.

It is an arithmetic number, because the mean of its divisors is an integer number (2098337250).

Almost surely, 2^11331021123 is an apocalyptic number.

11331021123 is a deficient number, since it is larger than the sum of its proper divisors (5455676877).

11331021123 is an equidigital number, since it uses as much as digits as its factorization.

11331021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419667458 (or 419667452 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11331021123 its reverse (32112013311), we get a palindrome (43443034434).

It can be divided in two parts, 1133102 and 1123, that added together give a square (1134225 = 1065²).

The spelling of 11331021123 in words is "eleven billion, three hundred thirty-one million, twenty-one thousand, one hundred twenty-three".