221100021010110 has 384 divisors, whose sum is σ = 625513819392000. Its totient is φ = 49800412569600.

The previous prime is 221100021010097. The next prime is 221100021010133. The reversal of 221100021010110 is 11010120001122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3465539991 + ... + 3465603789.

It is an arithmetic number, because the mean of its divisors is an integer number (1628942238000).

Almost surely, 2^{221100021010110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221100021010110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312756909696000).

221100021010110 is an abundant number, since it is smaller than the sum of its proper divisors (404413798381890).

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

221100021010110 is a wasteful number, since it uses less digits than its factorization.

221100021010110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64568 (or 64557 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221100021010110 its reverse (11010120001122), we get a palindrome (232110141011232).

The spelling of 221100021010110 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, ten thousand, one hundred ten".