121110101011105 has 4 divisors (see below), whose sum is σ = 145332121213332. Its totient is φ = 96888080808880.

The previous prime is 121110101011087. The next prime is 121110101011111. The reversal of 121110101011105 is 501110101011121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60212819934864 + 60897281076241 = 7759692^2 + 7803671^2 .

It is not a de Polignac number, because 121110101011105 - 2⁵ = 121110101011073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12111010101106 + ... + 12111010101115.

It is an arithmetic number, because the mean of its divisors is an integer number (36333030303333).

Almost surely, 2^{121110101011105} is an apocalyptic number.

It is an amenable number.

121110101011105 is a deficient number, since it is larger than the sum of its proper divisors (24222020202227).

121110101011105 is an equidigital number, since it uses as much as digits as its factorization.

121110101011105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222020202226.

The product of its (nonzero) digits is 10, while the sum is 16.

Adding to 121110101011105 its sum of digits (16), we get a palindrome (121110101011121).

Adding to 121110101011105 its reverse (501110101011121), we get a palindrome (622220202022226).

The spelling of 121110101011105 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred one million, eleven thousand, one hundred five".