21210222101110 has 64 divisors (see below), whose sum is σ = 43949654479872. Its totient is φ = 7219310530176.

The previous prime is 21210222101071. The next prime is 21210222101113. The reversal of 21210222101110 is 1110122201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210222101113) 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 31 ways as a sum of consecutive naturals, for example, 9072804 + ... + 11168536.

It is an arithmetic number, because the mean of its divisors is an integer number (686713351248).

Almost surely, 2^{21210222101110} is an apocalyptic number.

21210222101110 is an abundant number, since it is smaller than the sum of its proper divisors (22739432378762).

21210222101110 is a wasteful number, since it uses less digits than its factorization.

21210222101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096797.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210222101110 its reverse (1110122201212), we get a palindrome (22320344302322).

The spelling of 21210222101110 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-two million, one hundred one thousand, one hundred ten".