110101221221111 has 4 divisors (see below), whose sum is σ = 110119428804672. Its totient is φ = 110083013637552.

The previous prime is 110101221221059. The next prime is 110101221221129. The reversal of 110101221221111 is 111122122101011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110101221221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110101221221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110101221221191) 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, 9103782710 + ... + 9103794803.

It is an arithmetic number, because the mean of its divisors is an integer number (27529857201168).

Almost surely, 2^{110101221221111} is an apocalyptic number.

110101221221111 is a deficient number, since it is larger than the sum of its proper divisors (18207583561).

110101221221111 is an equidigital number, since it uses as much as digits as its factorization.

110101221221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18207583560.

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

Adding to 110101221221111 its reverse (111122122101011), we get a palindrome (221223343322122).

The spelling of 110101221221111 in words is "one hundred ten trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred eleven".