12103033331 has 4 divisors (see below), whose sum is σ = 12130354392. Its totient is φ = 12075712272.

The previous prime is 12103033303. The next prime is 12103033387. The reversal of 12103033331 is 13333030121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12103033331 is a prime.

It is a super-2 number, since 2×12103033331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12103033301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13659866 + ... + 13660751.

It is an arithmetic number, because the mean of its divisors is an integer number (3032588598).

Almost surely, 2^12103033331 is an apocalyptic number.

12103033331 is a deficient number, since it is larger than the sum of its proper divisors (27321061).

12103033331 is an equidigital number, since it uses as much as digits as its factorization.

12103033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27321060.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 12103033331 its reverse (13333030121), we get a palindrome (25436063452).

The spelling of 12103033331 in words is "twelve billion, one hundred three million, thirty-three thousand, three hundred thirty-one".