221111220202102 has 8 divisors (see below), whose sum is σ = 337924695026016. Its totient is φ = 108469655193432.

The previous prime is 221111220202087. The next prime is 221111220202109. The reversal of 221111220202102 is 201202022111122.

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 221111220202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111220202109) 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, 1042977453678 + ... + 1042977453889.

It is an arithmetic number, because the mean of its divisors is an integer number (42240586878252).

Almost surely, 2^{221111220202102} is an apocalyptic number.

221111220202102 is a deficient number, since it is larger than the sum of its proper divisors (116813474823914).

221111220202102 is a wasteful number, since it uses less digits than its factorization.

221111220202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085954907622.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221111220202102 its reverse (201202022111122), we get a palindrome (422313242313224).

The spelling of 221111220202102 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred twenty million, two hundred two thousand, one hundred two".