12012010011 has 6 divisors (see below), whose sum is σ = 17350681140. Its totient is φ = 8008006668.

The previous prime is 12012009959. The next prime is 12012010013. The reversal of 12012010011 is 11001021021.

It is a happy number.

It is not a de Polignac number, because 12012010011 - 2⁷ = 12012009883 is a prime.

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: 1334667779 = 12012010011 / (1 + 2 + 0 + 1 + 2 + 0 + 1 + 0 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 12012009975 and 12012010002.

It is not an unprimeable number, because it can be changed into a prime (12012010013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 667333881 + ... + 667333898.

It is an arithmetic number, because the mean of its divisors is an integer number (2891780190).

Almost surely, 2^12012010011 is an apocalyptic number.

12012010011 is a deficient number, since it is larger than the sum of its proper divisors (5338671129).

12012010011 is a wasteful number, since it uses less digits than its factorization.

12012010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334667785 (or 1334667782 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12012010011 its reverse (11001021021), we get a palindrome (23013031032).

The spelling of 12012010011 in words is "twelve billion, twelve million, ten thousand, eleven".