12010020211001 has 4 divisors (see below), whose sum is σ = 12011255692404. Its totient is φ = 12008784729600.

The previous prime is 12010020210961. The next prime is 12010020211037. The reversal of 12010020211001 is 10011202001021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5658208932601 + 6351811278400 = 2378699^2 + 2520280^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010020211001 - 2¹⁰ = 12010020209977 is a prime.

It is a super-2 number, since 2×12010020211001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010020211051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617726120 + ... + 617745561.

It is an arithmetic number, because the mean of its divisors is an integer number (3002813923101).

Almost surely, 2^{12010020211001} is an apocalyptic number.

It is an amenable number.

12010020211001 is a deficient number, since it is larger than the sum of its proper divisors (1235481403).

12010020211001 is an equidigital number, since it uses as much as digits as its factorization.

12010020211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235481402.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12010020211001 its reverse (10011202001021), we get a palindrome (22021222212022).

The spelling of 12010020211001 in words is "twelve trillion, ten billion, twenty million, two hundred eleven thousand, one".