21210301110 has 64 divisors (see below), whose sum is σ = 52182325440. Its totient is φ = 5515868160.

The previous prime is 21210301093. The next prime is 21210301121. The reversal of 21210301110 is 1110301212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140500 + ... + 249320.

It is an arithmetic number, because the mean of its divisors is an integer number (815348835).

Almost surely, 2^21210301110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21210301110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26091162720).

21210301110 is an abundant number, since it is smaller than the sum of its proper divisors (30972024330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21210301110 is a wasteful number, since it uses less digits than its factorization.

21210301110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108993.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21210301110 its reverse (1110301212), we get a palindrome (22320602322).

The spelling of 21210301110 in words is "twenty-one billion, two hundred ten million, three hundred one thousand, one hundred ten".