110111212120111 has 4 divisors (see below), whose sum is σ = 110335471208424. Its totient is φ = 109886953031800.

The previous prime is 110111212120103. The next prime is 110111212120153. The reversal of 110111212120111 is 111021212111011.

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 110111212120111 - 2³ = 110111212120103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111212120171) 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, 112129543420 + ... + 112129544401.

It is an arithmetic number, because the mean of its divisors is an integer number (27583867802106).

Almost surely, 2^{110111212120111} is an apocalyptic number.

110111212120111 is a deficient number, since it is larger than the sum of its proper divisors (224259088313).

110111212120111 is an equidigital number, since it uses as much as digits as its factorization.

110111212120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224259088312.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 110111212120111 its reverse (111021212111011), we get a palindrome (221132424231122).

The spelling of 110111212120111 in words is "one hundred ten trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".