12021012211011 has 16 divisors (see below), whose sum is σ = 16520218138368. Its totient is φ = 7771607978400.

The previous prime is 12021012210947. The next prime is 12021012211027. The reversal of 12021012211011 is 11011221012021.

It is a happy number.

It is not a de Polignac number, because 12021012211011 - 2⁶ = 12021012210947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021012211081) 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 15 ways as a sum of consecutive naturals, for example, 462582721 + ... + 462608706.

It is an arithmetic number, because the mean of its divisors is an integer number (1032513633648).

Almost surely, 2^{12021012211011} is an apocalyptic number.

12021012211011 is a deficient number, since it is larger than the sum of its proper divisors (4499205927357).

12021012211011 is an equidigital number, since it uses as much as digits as its factorization.

12021012211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925191562.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12021012211011 its reverse (11011221012021), we get a palindrome (23032233223032).

The spelling of 12021012211011 in words is "twelve trillion, twenty-one billion, twelve million, two hundred eleven thousand, eleven".