221224102 has 16 divisors (see below), whose sum is σ = 362328912. Its totient is φ = 100465920.

The previous prime is 221224079. The next prime is 221224109. The reversal of 221224102 is 201422122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221224109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24658 + ... + 32410.

It is an arithmetic number, because the mean of its divisors is an integer number (22645557).

Almost surely, 2^221224102 is an apocalyptic number.

221224102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221224102 is a deficient number, since it is larger than the sum of its proper divisors (141104810).

221224102 is a wasteful number, since it uses less digits than its factorization.

221224102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9063.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 221224102 is about 14873.6042034202. The cubic root of 221224102 is about 604.7986507527.

Adding to 221224102 its reverse (201422122), we get a palindrome (422646224).

The spelling of 221224102 in words is "two hundred twenty-one million, two hundred twenty-four thousand, one hundred two".