12103011 has 6 divisors (see below), whose sum is σ = 17482140. Its totient is φ = 8068668.

The previous prime is 12103009. The next prime is 12103043. The reversal of 12103011 is 11030121.

It is not a de Polignac number, because 12103011 - 2¹ = 12103009 is a prime.

It is a super-2 number, since 2×12103011² = 292965750532242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1344779 = 12103011 / (1 + 2 + 1 + 0 + 3 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 12102984 and 12103002.

It is not an unprimeable number, because it can be changed into a prime (12103811) 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 5 ways as a sum of consecutive naturals, for example, 672381 + ... + 672398.

It is an arithmetic number, because the mean of its divisors is an integer number (2913690).

Almost surely, 2^12103011 is an apocalyptic number.

12103011 is a deficient number, since it is larger than the sum of its proper divisors (5379129).

12103011 is a wasteful number, since it uses less digits than its factorization.

12103011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344785 (or 1344782 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 12103011 is about 3478.9382000835. The cubic root of 12103011 is about 229.5960837653.

Adding to 12103011 its reverse (11030121), we get a palindrome (23133132).

It can be divided in two parts, 1 and 2103011, that added together give a palindrome (2103012).

The spelling of 12103011 in words is "twelve million, one hundred three thousand, eleven".