12011000001 has 48 divisors (see below), whose sum is σ = 21886216128. Its totient is φ = 5759510400.

The previous prime is 12010999997. The next prime is 12011000011. The reversal of 12011000001 is 10000011021.

It is not a de Polignac number, because 12011000001 - 2² = 12010999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011000011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264670 + ... + 306711.

It is an arithmetic number, because the mean of its divisors is an integer number (455962836).

Almost surely, 2^12011000001 is an apocalyptic number.

12011000001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011000001 is a deficient number, since it is larger than the sum of its proper divisors (9875216127).

12011000001 is a wasteful number, since it uses less digits than its factorization.

12011000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571422 (or 571415 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 12011000001 its reverse (10000011021), we get a palindrome (22011011022).

The spelling of 12011000001 in words is "twelve billion, eleven million, one", and thus it is an aban number and an uban number.