221002102222102 has 4 divisors (see below), whose sum is σ = 331503153333156. Its totient is φ = 110501051111050.

The previous prime is 221002102222093. The next prime is 221002102222147. The reversal of 221002102222102 is 201222201200122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×221002102222102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221002102222102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250525555524 + ... + 55250525555527.

It is an arithmetic number, because the mean of its divisors is an integer number (82875788333289).

Almost surely, 2^{221002102222102} is an apocalyptic number.

221002102222102 is a deficient number, since it is larger than the sum of its proper divisors (110501051111054).

221002102222102 is a wasteful number, since it uses less digits than its factorization.

221002102222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110501051111053.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221002102222102 its reverse (201222201200122), we get a palindrome (422224303422224).

The spelling of 221002102222102 in words is "two hundred twenty-one trillion, two billion, one hundred two million, two hundred twenty-two thousand, one hundred two".