12002312011 has 4 divisors (see below), whose sum is σ = 12040174512. Its totient is φ = 11964449512.

The previous prime is 12002311987. The next prime is 12002312017. The reversal of 12002312011 is 11021320021.

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 12002312011 - 2⁹ = 12002311499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002311982 and 12002312000.

It is not an unprimeable number, because it can be changed into a prime (12002312017) 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, 18930775 + ... + 18931408.

It is an arithmetic number, because the mean of its divisors is an integer number (3010043628).

Almost surely, 2^12002312011 is an apocalyptic number.

12002312011 is a deficient number, since it is larger than the sum of its proper divisors (37862501).

12002312011 is an equidigital number, since it uses as much as digits as its factorization.

12002312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37862500.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12002312011 its reverse (11021320021), we get a palindrome (23023632032).

The spelling of 12002312011 in words is "twelve billion, two million, three hundred twelve thousand, eleven".