21010202002211 has 4 divisors (see below), whose sum is σ = 21010246797000. Its totient is φ = 21010157207424.

The previous prime is 21010202002171. The next prime is 21010202002219. The reversal of 21010202002211 is 11220020201012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21010202002211 - 2⁶ = 21010202002147 is a prime.

It is a super-2 number, since 2×21010202002211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010202002219) 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 in 3 ways as a sum of consecutive naturals, for example, 21686321 + ... + 22634418.

It is an arithmetic number, because the mean of its divisors is an integer number (5252561699250).

Almost surely, 2^{21010202002211} is an apocalyptic number.

21010202002211 is a deficient number, since it is larger than the sum of its proper divisors (44794789).

21010202002211 is an equidigital number, since it uses as much as digits as its factorization.

21010202002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44794788.

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

Adding to 21010202002211 its reverse (11220020201012), we get a palindrome (32230222203223).

The spelling of 21010202002211 in words is "twenty-one trillion, ten billion, two hundred two million, two thousand, two hundred eleven".