210021212211 has 16 divisors (see below), whose sum is σ = 284130145440. Its totient is φ = 137966803200.

The previous prime is 210021212197. The next prime is 210021212227. The reversal of 210021212211 is 112212120012.

It is not a de Polignac number, because 210021212211 - 2⁵ = 210021212179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210021212251) 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, 214440 + ... + 682661.

It is an arithmetic number, because the mean of its divisors is an integer number (17758134090).

Almost surely, 2^210021212211 is an apocalyptic number.

210021212211 is a deficient number, since it is larger than the sum of its proper divisors (74108933229).

210021212211 is a wasteful number, since it uses less digits than its factorization.

210021212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898246.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210021212211 its reverse (112212120012), we get a palindrome (322233332223).

The spelling of 210021212211 in words is "two hundred ten billion, twenty-one million, two hundred twelve thousand, two hundred eleven".