21010222211 has 32 divisors (see below), whose sum is σ = 24625036800. Its totient is φ = 17722298880.

The previous prime is 21010222187. The next prime is 21010222237. The reversal of 21010222211 is 11222201012.

It is not a de Polignac number, because 21010222211 - 2³⁰ = 19936480387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010222241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8051675 + ... + 8054283.

It is an arithmetic number, because the mean of its divisors is an integer number (769532400).

Almost surely, 2^21010222211 is an apocalyptic number.

21010222211 is a deficient number, since it is larger than the sum of its proper divisors (3614814589).

21010222211 is a wasteful number, since it uses less digits than its factorization.

21010222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419.

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

Adding to 21010222211 its reverse (11222201012), we get a palindrome (32232423223).

The spelling of 21010222211 in words is "twenty-one billion, ten million, two hundred twenty-two thousand, two hundred eleven".