221112100111011 has 16 divisors (see below), whose sum is σ = 307048702411008. Its totient is φ = 141404007679200.

The previous prime is 221112100110977. The next prime is 221112100111027. The reversal of 221112100111011 is 110111001211122.

It is not a de Polignac number, because 221112100111011 - 2²⁷ = 221111965893283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221112100111411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14028167485 + ... + 14028183246.

It is an arithmetic number, because the mean of its divisors is an integer number (19190543900688).

Almost surely, 2^{221112100111011} is an apocalyptic number.

221112100111011 is a deficient number, since it is larger than the sum of its proper divisors (85936602299997).

221112100111011 is a wasteful number, since it uses less digits than its factorization.

221112100111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28056350842.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 221112100111011 its reverse (110111001211122), we get a palindrome (331223101322133).

The spelling of 221112100111011 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred million, one hundred eleven thousand, eleven".