221111112011102 has 16 divisors (see below), whose sum is σ = 334536344241792. Its totient is φ = 109603111495680.

The previous prime is 221111112011089. The next prime is 221111112011129. The reversal of 221111112011102 is 201110211111122.

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 7 ways as a sum of consecutive naturals, for example, 1028450243 + ... + 1028665214.

It is an arithmetic number, because the mean of its divisors is an integer number (20908521515112).

Almost surely, 2^{221111112011102} is an apocalyptic number.

221111112011102 is a deficient number, since it is larger than the sum of its proper divisors (113425232230690).

221111112011102 is a wasteful number, since it uses less digits than its factorization.

221111112011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057115923.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221111112011102 its reverse (201110211111122), we get a palindrome (422221323122224).

The spelling of 221111112011102 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred twelve million, eleven thousand, one hundred two".