21211010020211 has 16 divisors (see below), whose sum is σ = 23161926699648. Its totient is φ = 19263870225600.

The previous prime is 21211010020181. The next prime is 21211010020229. The reversal of 21211010020211 is 11202001011212.

It is not a de Polignac number, because 21211010020211 - 2⁶ = 21211010020147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21211010020511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152823716 + ... + 152962446.

It is an arithmetic number, because the mean of its divisors is an integer number (1447620418728).

Almost surely, 2^{21211010020211} is an apocalyptic number.

21211010020211 is a deficient number, since it is larger than the sum of its proper divisors (1950916679437).

21211010020211 is a wasteful number, since it uses less digits than its factorization.

21211010020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152242.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21211010020211 its reverse (11202001011212), we get a palindrome (32413011031423).

The spelling of 21211010020211 in words is "twenty-one trillion, two hundred eleven billion, ten million, twenty thousand, two hundred eleven".