221100111202102 has 32 divisors (see below), whose sum is σ = 365384701017504. Its totient is φ = 99504363552000.

The previous prime is 221100111202039. The next prime is 221100111202183. The reversal of 221100111202102 is 201202111001122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609795538 + ... + 610158010.

It is an arithmetic number, because the mean of its divisors is an integer number (11418271906797).

Almost surely, 2^{221100111202102} is an apocalyptic number.

221100111202102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221100111202102 is a deficient number, since it is larger than the sum of its proper divisors (144284589815402).

221100111202102 is a wasteful number, since it uses less digits than its factorization.

221100111202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637104.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221100111202102 its reverse (201202111001122), we get a palindrome (422302222203224).

The spelling of 221100111202102 in words is "two hundred twenty-one trillion, one hundred billion, one hundred eleven million, two hundred two thousand, one hundred two".