21222012210110 has 32 divisors (see below), whose sum is σ = 38826709797600. Its totient is φ = 8349458232960.

The previous prime is 21222012210109. The next prime is 21222012210131. The reversal of 21222012210110 is 1101221022212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28836701 + ... + 29563479.

It is an arithmetic number, because the mean of its divisors is an integer number (1213334681175).

Almost surely, 2^{21222012210110} is an apocalyptic number.

21222012210110 is a deficient number, since it is larger than the sum of its proper divisors (17604697587490).

21222012210110 is a wasteful number, since it uses less digits than its factorization.

21222012210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774716.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222012210110 its reverse (1101221022212), we get a palindrome (22323233232322).

The spelling of 21222012210110 in words is "twenty-one trillion, two hundred twenty-two billion, twelve million, two hundred ten thousand, one hundred ten".