221021010110 has 32 divisors (see below), whose sum is σ = 403354321920. Its totient is φ = 87182915328.

The previous prime is 221021010103. The next prime is 221021010143. The reversal of 221021010110 is 11010120122.

It is a junction number, because it is equal to n+sod(n) for n = 221021010091 and 221021010100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5116964 + ... + 5159976.

It is an arithmetic number, because the mean of its divisors is an integer number (12604822560).

Almost surely, 2^221021010110 is an apocalyptic number.

221021010110 is a deficient number, since it is larger than the sum of its proper divisors (182333311810).

221021010110 is a wasteful number, since it uses less digits than its factorization.

221021010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50132.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221021010110 its reverse (11010120122), we get a palindrome (232031130232).

The spelling of 221021010110 in words is "two hundred twenty-one billion, twenty-one million, ten thousand, one hundred ten".