110122111212121 has 4 divisors (see below), whose sum is σ = 110122136238244. Its totient is φ = 110122086186000.

The previous prime is 110122111212103. The next prime is 110122111212131. The reversal of 110122111212121 is 121212111221011.

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 73204092171721 + 36918019040400 = 8555939^2 + 6076020^2 .

It is a cyclic number.

It is not a de Polignac number, because 110122111212121 - 2²⁹ = 110121574341209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110122111212131) 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, 3967110 + ... + 15361711.

It is an arithmetic number, because the mean of its divisors is an integer number (27530534059561).

Almost surely, 2^{110122111212121} is an apocalyptic number.

It is an amenable number.

110122111212121 is a deficient number, since it is larger than the sum of its proper divisors (25026123).

110122111212121 is an equidigital number, since it uses as much as digits as its factorization.

110122111212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25026122.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 110122111212121 its reverse (121212111221011), we get a palindrome (231334222433132).

The spelling of 110122111212121 in words is "one hundred ten trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-one".