221100011110111 has 16 divisors (see below), whose sum is σ = 253477129639680. Its totient is φ = 188920869762240.

The previous prime is 221100011110103. The next prime is 221100011110129. The reversal of 221100011110111 is 111011110001122.

It is not a de Polignac number, because 221100011110111 - 2³ = 221100011110103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221100011110091 and 221100011110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100011120111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15722835 + ... + 26256571.

It is an arithmetic number, because the mean of its divisors is an integer number (15842320602480).

Almost surely, 2^{221100011110111} is an apocalyptic number.

221100011110111 is a deficient number, since it is larger than the sum of its proper divisors (32377118529569).

221100011110111 is a wasteful number, since it uses less digits than its factorization.

221100011110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543134.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 221100011110111 its reverse (111011110001122), we get a palindrome (332111121111233).

The spelling of 221100011110111 in words is "two hundred twenty-one trillion, one hundred billion, eleven million, one hundred ten thousand, one hundred eleven".