221323210102 has 8 divisors (see below), whose sum is σ = 331991510112. Its totient is φ = 110659373400.

The previous prime is 221323210037. The next prime is 221323210117. The reversal of 221323210102 is 201012323122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221323210102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988974 + ... + 1191937.

It is an arithmetic number, because the mean of its divisors is an integer number (41498938764).

Almost surely, 2^221323210102 is an apocalyptic number.

221323210102 is a deficient number, since it is larger than the sum of its proper divisors (110668300010).

221323210102 is a wasteful number, since it uses less digits than its factorization.

221323210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231654.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221323210102 its reverse (201012323122), we get a palindrome (422335533224).

The spelling of 221323210102 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred ten thousand, one hundred two".