221244123102 has 8 divisors (see below), whose sum is σ = 442488246216. Its totient is φ = 73748041032.

The previous prime is 221244123053. The next prime is 221244123103. The reversal of 221244123102 is 201321442122.

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

221244123102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244123103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18437010253 + ... + 18437010264.

It is an arithmetic number, because the mean of its divisors is an integer number (55311030777).

Almost surely, 2^221244123102 is an apocalyptic number.

221244123102 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.

221244123102 is a wasteful number, since it uses less digits than its factorization.

221244123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36874020522.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221244123102 its reverse (201321442122), we get a palindrome (422565565224).

The spelling of 221244123102 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred twenty-three thousand, one hundred two".