12021010002221 has 24 divisors (see below), whose sum is σ = 13909170260160. Its totient is φ = 10352603416320.

The previous prime is 12021010002203. The next prime is 12021010002227. The reversal of 12021010002221 is 12220001012021.

It is not a de Polignac number, because 12021010002221 - 2³⁴ = 12003830133037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021010002196 and 12021010002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021010002227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65459696 + ... + 65643078.

It is an arithmetic number, because the mean of its divisors is an integer number (579548760840).

Almost surely, 2^{12021010002221} is an apocalyptic number.

12021010002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021010002221 is a deficient number, since it is larger than the sum of its proper divisors (1888160257939).

12021010002221 is a wasteful number, since it uses less digits than its factorization.

12021010002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211937 (or 211926 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021010002221 its reverse (12220001012021), we get a palindrome (24241011014242).

The spelling of 12021010002221 in words is "twelve trillion, twenty-one billion, ten million, two thousand, two hundred twenty-one".