12101331 has 48 divisors (see below), whose sum is σ = 19649952. Its totient is φ = 6589440.

The previous prime is 12101329. The next prime is 12101357. The reversal of 12101331 is 13310121.

It is not a de Polignac number, because 12101331 - 2¹ = 12101329 is a prime.

It is a super-2 number, since 2×12101331² = 292884423943122, which contains 22 as substring.

12101331 is a modest number, since divided by 1331 gives 1210 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12101731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228301 + ... + 228353.

It is an arithmetic number, because the mean of its divisors is an integer number (409374).

Almost surely, 2^12101331 is an apocalyptic number.

12101331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12101331 is a deficient number, since it is larger than the sum of its proper divisors (7548621).

12101331 is a wasteful number, since it uses less digits than its factorization.

12101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 12101331 is about 3478.6967387227. The cubic root of 12101331 is about 229.5854599828.

Adding to 12101331 its reverse (13310121), we get a palindrome (25411452).

The spelling of 12101331 in words is "twelve million, one hundred one thousand, three hundred thirty-one".