21002221010110 has 32 divisors (see below), whose sum is σ = 39140147116800. Its totient is φ = 8104448755200.

The previous prime is 21002221010087. The next prime is 21002221010149. The reversal of 21002221010110 is 1101012220012.

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, 29802190 + ... + 30498769.

It is an arithmetic number, because the mean of its divisors is an integer number (1223129597400).

Almost surely, 2^{21002221010110} is an apocalyptic number.

21002221010110 is a deficient number, since it is larger than the sum of its proper divisors (18137926106690).

21002221010110 is a wasteful number, since it uses less digits than its factorization.

21002221010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60302196.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21002221010110 its reverse (1101012220012), we get a palindrome (22103233230122).

The spelling of 21002221010110 in words is "twenty-one trillion, two billion, two hundred twenty-one million, ten thousand, one hundred ten".