12111023331 has 24 divisors (see below), whose sum is σ = 19121609520. Its totient is φ = 7325563200.

The previous prime is 12111023293. The next prime is 12111023399. The reversal of 12111023331 is 13332011121.

It is not a de Polignac number, because 12111023331 - 2¹³ = 12111015139 is a prime.

It is a super-2 number, since 2×12111023331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12111023531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69780 + ... + 170561.

It is an arithmetic number, because the mean of its divisors is an integer number (796733730).

Almost surely, 2^12111023331 is an apocalyptic number.

12111023331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111023331 is a deficient number, since it is larger than the sum of its proper divisors (7010586189).

12111023331 is a wasteful number, since it uses less digits than its factorization.

12111023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240867 (or 240864 counting only the distinct ones).

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

Adding to 12111023331 its reverse (13332011121), we get a palindrome (25443034452).

It can be divided in two parts, 121110 and 23331, that added together give a palindrome (144441).

The spelling of 12111023331 in words is "twelve billion, one hundred eleven million, twenty-three thousand, three hundred thirty-one".