221102121110 has 32 divisors (see below), whose sum is σ = 428653209600. Its totient is φ = 81627182208.

The previous prime is 221102121073. The next prime is 221102121113. The reversal of 221102121110 is 11121201122.

It is a super-2 number, since 2×221102121110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102121113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 941291 + ... + 1152489.

It is an arithmetic number, because the mean of its divisors is an integer number (13395412800).

Almost surely, 2^221102121110 is an apocalyptic number.

221102121110 is a deficient number, since it is larger than the sum of its proper divisors (207551088490).

221102121110 is a wasteful number, since it uses less digits than its factorization.

221102121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219272.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221102121110 its reverse (11121201122), we get a palindrome (232223322232).

The spelling of 221102121110 in words is "two hundred twenty-one billion, one hundred two million, one hundred twenty-one thousand, one hundred ten".