12012000001 has 4 divisors (see below), whose sum is σ = 12399483904. Its totient is φ = 11624516100.

The previous prime is 12011999983. The next prime is 12012000031. The reversal of 12012000001 is 10000021021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12012000001 - 2¹⁷ = 12011868929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012000031) 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, 193741905 + ... + 193741966.

It is an arithmetic number, because the mean of its divisors is an integer number (3099870976).

Almost surely, 2^12012000001 is an apocalyptic number.

It is an amenable number.

12012000001 is a deficient number, since it is larger than the sum of its proper divisors (387483903).

12012000001 is an equidigital number, since it uses as much as digits as its factorization.

12012000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387483902.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12012000001 its reverse (10000021021), we get a palindrome (22012021022).

The spelling of 12012000001 in words is "twelve billion, twelve million, one", and thus it is an aban number and an uban number.