110111100210121 has 4 divisors (see below), whose sum is σ = 110140787757700. Its totient is φ = 110081412662544.

The previous prime is 110111100210113. The next prime is 110111100210161. The reversal of 110111100210121 is 121012001111011.

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 24868812554496 + 85242287655625 = 4986864^2 + 9232675^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111100210121 - 2³ = 110111100210113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110111100210161) 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, 14843768226 + ... + 14843775643.

It is an arithmetic number, because the mean of its divisors is an integer number (27535196939425).

Almost surely, 2^{110111100210121} is an apocalyptic number.

It is an amenable number.

110111100210121 is a deficient number, since it is larger than the sum of its proper divisors (29687547579).

110111100210121 is an equidigital number, since it uses as much as digits as its factorization.

110111100210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29687547578.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110111100210121 its reverse (121012001111011), we get a palindrome (231123101321132).

The spelling of 110111100210121 in words is "one hundred ten trillion, one hundred eleven billion, one hundred million, two hundred ten thousand, one hundred twenty-one".