221331222102 has 16 divisors (see below), whose sum is σ = 456941878272. Its totient is φ = 71397168360.

The previous prime is 221331222061. The next prime is 221331222107. The reversal of 221331222102 is 201222133122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331222107) 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, 594976218 + ... + 594976589.

It is an arithmetic number, because the mean of its divisors is an integer number (28558867392).

Almost surely, 2^221331222102 is an apocalyptic number.

221331222102 is an abundant number, since it is smaller than the sum of its proper divisors (235610656170).

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

221331222102 is a wasteful number, since it uses less digits than its factorization.

221331222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189952843.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221331222102 its reverse (201222133122), we get a palindrome (422553355224).

The spelling of 221331222102 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred twenty-two thousand, one hundred two".