21022210211 has 8 divisors (see below), whose sum is σ = 21100300464. Its totient is φ = 20944254240.

The previous prime is 21022210193. The next prime is 21022210241. The reversal of 21022210211 is 11201222012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21022210211 - 2³⁰ = 19948468387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022210241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285716 + ... + 351678.

It is an arithmetic number, because the mean of its divisors is an integer number (2637537558).

Almost surely, 2^21022210211 is an apocalyptic number.

21022210211 is a deficient number, since it is larger than the sum of its proper divisors (78090253).

21022210211 is an equidigital number, since it uses as much as digits as its factorization.

21022210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67141.

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

Adding to 21022210211 its reverse (11201222012), we get a palindrome (32223432223).

The spelling of 21022210211 in words is "twenty-one billion, twenty-two million, two hundred ten thousand, two hundred eleven".