221102131110 has 96 divisors (see below), whose sum is σ = 637193475072. Its totient is φ = 48907373760.

The previous prime is 221102131109. The next prime is 221102131123. The reversal of 221102131110 is 11131201122.

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 221102131110.

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 47 ways as a sum of consecutive naturals, for example, 2380392 + ... + 2471531.

It is an arithmetic number, because the mean of its divisors is an integer number (6637432032).

Almost surely, 2^221102131110 is an apocalyptic number.

221102131110 is an abundant number, since it is smaller than the sum of its proper divisors (416091343962).

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

221102131110 is a wasteful number, since it uses less digits than its factorization.

221102131110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851978 (or 4851971 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 221102131110 its reverse (11131201122), we get a palindrome (232233332232).

The spelling of 221102131110 in words is "two hundred twenty-one billion, one hundred two million, one hundred thirty-one thousand, one hundred ten".