210221000221110 has 64 divisors (see below), whose sum is σ = 506040410886912. Its totient is φ = 55891190249856.

The previous prime is 210221000221081. The next prime is 210221000221117. The reversal of 210221000221110 is 11122000122012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210221000221110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221000221117) 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, 93273864 + ... + 95501076.

It is an arithmetic number, because the mean of its divisors is an integer number (7906881420108).

Almost surely, 2^{210221000221110} is an apocalyptic number.

210221000221110 is an abundant number, since it is smaller than the sum of its proper divisors (295819410665802).

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

210221000221110 is a wasteful number, since it uses less digits than its factorization.

210221000221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236637.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210221000221110 its reverse (11122000122012), we get a palindrome (221343000343122).

The spelling of 210221000221110 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred twenty-one thousand, one hundred ten".