110111001121001 has 4 divisors (see below), whose sum is σ = 110114659688532. Its totient is φ = 110107342553472.

The previous prime is 110111001120979. The next prime is 110111001121057. The reversal of 110111001121001 is 100121100111011.

It is a happy number.

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 39707137849600 + 70403863271401 = 6301360^2 + 8390701^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111001121001 - 2²⁶ = 110110934012137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110111001121301) 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, 1829238620 + ... + 1829298813.

It is an arithmetic number, because the mean of its divisors is an integer number (27528664922133).

Almost surely, 2^{110111001121001} is an apocalyptic number.

It is an amenable number.

110111001121001 is a deficient number, since it is larger than the sum of its proper divisors (3658567531).

110111001121001 is an equidigital number, since it uses as much as digits as its factorization.

110111001121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658567530.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 110111001121001 its reverse (100121100111011), we get a palindrome (210232101232012).

The spelling of 110111001121001 in words is "one hundred ten trillion, one hundred eleven billion, one million, one hundred twenty-one thousand, one".