12003400511 has 4 divisors (see below), whose sum is σ = 12709482912. Its totient is φ = 11297318112.

The previous prime is 12003400501. The next prime is 12003400523. The reversal of 12003400511 is 11500430021.

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

It is a cyclic number.

It is not a de Polignac number, because 12003400511 - 2⁶ = 12003400447 is a prime.

It is a super-2 number, since 2×12003400511² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 706082383 = 12003400511 / (1 + 2 + 0 + 0 + 3 + 4 + 0 + 0 + 5 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12003400511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003400501) 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, 353041175 + ... + 353041208.

It is an arithmetic number, because the mean of its divisors is an integer number (3177370728).

Almost surely, 2^12003400511 is an apocalyptic number.

12003400511 is a deficient number, since it is larger than the sum of its proper divisors (706082401).

12003400511 is an equidigital number, since it uses as much as digits as its factorization.

12003400511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706082400.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 12003400511 its reverse (11500430021), we get a palindrome (23503830532).

The spelling of 12003400511 in words is "twelve billion, three million, four hundred thousand, five hundred eleven".