211202002021 has 2 divisors, whose sum is σ = 211202002022. Its totient is φ = 211202002020.

The previous prime is 211202001971. The next prime is 211202002091. The reversal of 211202002021 is 120200202112.

It is a happy number.

211202002021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192469973796 + 18732028225 = 438714^2 + 136865^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202002021 - 2²⁹ = 210665131109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211202001992 and 211202002010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211202002091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601001010 + 105601001011.

It is an arithmetic number, because the mean of its divisors is an integer number (105601001011).

Almost surely, 2^211202002021 is an apocalyptic number.

It is an amenable number.

211202002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202002021 is an equidigital number, since it uses as much as digits as its factorization.

211202002021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211202002021 its reverse (120200202112), we get a palindrome (331402204133).

The spelling of 211202002021 in words is "two hundred eleven billion, two hundred two million, two thousand, twenty-one".