12102405247 has 16 divisors (see below), whose sum is σ = 12885613920. Its totient is φ = 11327275008.

The previous prime is 12102405241. The next prime is 12102405253. The reversal of 12102405247 is 74250420121.

It is an interprime number because it is at equal distance from previous prime (12102405241) and next prime (12102405253).

It is a cyclic number.

It is not a de Polignac number, because 12102405247 - 2¹¹ = 12102403199 is a prime.

It is a super-2 number, since 2×12102405247² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102405241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3095668 + ... + 3099574.

It is an arithmetic number, because the mean of its divisors is an integer number (805350870).

Almost surely, 2^12102405247 is an apocalyptic number.

12102405247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12102405247 is a deficient number, since it is larger than the sum of its proper divisors (783208673).

12102405247 is a wasteful number, since it uses less digits than its factorization.

12102405247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 12102405247 its reverse (74250420121), we get a palindrome (86352825368).

The spelling of 12102405247 in words is "twelve billion, one hundred two million, four hundred five thousand, two hundred forty-seven".