221223102 has 8 divisors (see below), whose sum is σ = 442446216. Its totient is φ = 73741032.

The previous prime is 221223083. The next prime is 221223103. The reversal of 221223102 is 201322122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

221223102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221223103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18435253 + ... + 18435264.

It is an arithmetic number, because the mean of its divisors is an integer number (55305777).

Almost surely, 2^221223102 is an apocalyptic number.

221223102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221223102 is a wasteful number, since it uses less digits than its factorization.

221223102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36870522.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221223102 is about 14873.5705867824. The cubic root of 221223102 is about 604.7977394603.

Adding to 221223102 its reverse (201322122), we get a palindrome (422545224).

The spelling of 221223102 in words is "two hundred twenty-one million, two hundred twenty-three thousand, one hundred two".