12012021011001 has 64 divisors (see below), whose sum is σ = 18862119198720. Its totient is φ = 6722743991040.

The previous prime is 12012021010933. The next prime is 12012021011147. The reversal of 12012021011001 is 10011012021021.

It is not a de Polignac number, because 12012021011001 - 2¹⁵ = 12012020978233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012021051001) 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 63 ways as a sum of consecutive naturals, for example, 339237840 + ... + 339273246.

It is an arithmetic number, because the mean of its divisors is an integer number (294720612480).

Almost surely, 2^{12012021011001} is an apocalyptic number.

12012021011001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12012021011001 is a deficient number, since it is larger than the sum of its proper divisors (6850098187719).

12012021011001 is a wasteful number, since it uses less digits than its factorization.

12012021011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50886.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12012021011001 its reverse (10011012021021), we get a palindrome (22023033032022).

The spelling of 12012021011001 in words is "twelve trillion, twelve billion, twenty-one million, eleven thousand, one".