221221200110 has 32 divisors (see below), whose sum is σ = 400992737760. Its totient is φ = 87868190592.

The previous prime is 221221200091. The next prime is 221221200133. The reversal of 221221200110 is 11002122122.

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, 2434412 + ... + 2523648.

It is an arithmetic number, because the mean of its divisors is an integer number (12531023055).

Almost surely, 2^221221200110 is an apocalyptic number.

221221200110 is a deficient number, since it is larger than the sum of its proper divisors (179771537650).

221221200110 is a wasteful number, since it uses less digits than its factorization.

221221200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90980.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221221200110 its reverse (11002122122), we get a palindrome (232223322232).

The spelling of 221221200110 in words is "two hundred twenty-one billion, two hundred twenty-one million, two hundred thousand, one hundred ten".