221112100002111 has 4 divisors (see below), whose sum is σ = 294816133336152. Its totient is φ = 147408066668072.

The previous prime is 221112100002019. The next prime is 221112100002127. The reversal of 221112100002111 is 111200001211122.

It is a happy number.

221112100002111 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221112100002111 - 2⁹ = 221112100001599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112100002161) 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, 36852016667016 + ... + 36852016667021.

It is an arithmetic number, because the mean of its divisors is an integer number (73704033334038).

Almost surely, 2^{221112100002111} is an apocalyptic number.

221112100002111 is a deficient number, since it is larger than the sum of its proper divisors (73704033334041).

221112100002111 is an equidigital number, since it uses as much as digits as its factorization.

221112100002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73704033334040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221112100002111 its reverse (111200001211122), we get a palindrome (332312101213233).

The spelling of 221112100002111 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred million, two thousand, one hundred eleven".