12211010002021 has 4 divisors (see below), whose sum is σ = 12220395868044. Its totient is φ = 12201624136000.

The previous prime is 12211010001937. The next prime is 12211010002091. The reversal of 12211010002021 is 12020001011221.

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 6299372121025 + 5911637880996 = 2509855^2 + 2431386^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211010002021 - 2²³ = 12211001613413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211010001992 and 12211010002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211010002091) 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, 4692931060 + ... + 4692933661.

It is an arithmetic number, because the mean of its divisors is an integer number (3055098967011).

Almost surely, 2^{12211010002021} is an apocalyptic number.

It is an amenable number.

12211010002021 is a deficient number, since it is larger than the sum of its proper divisors (9385866023).

12211010002021 is an equidigital number, since it uses as much as digits as its factorization.

12211010002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385866022.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12211010002021 its reverse (12020001011221), we get a palindrome (24231011013242).

The spelling of 12211010002021 in words is "twelve trillion, two hundred eleven billion, ten million, two thousand, twenty-one".