110121210001 has 4 divisors (see below), whose sum is σ = 120132229104. Its totient is φ = 100110190900.

The previous prime is 110121209999. The next prime is 110121210037. The reversal of 110121210001 is 100012121011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100012121011 = 11 ⋅9092011001.

It is a cyclic number.

It is not a de Polignac number, because 110121210001 - 2¹ = 110121209999 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 110121210001.

It is not an unprimeable number, because it can be changed into a prime (110121210091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005509535 + ... + 5005509556.

It is an arithmetic number, because the mean of its divisors is an integer number (30033057276).

Almost surely, 2^110121210001 is an apocalyptic number.

110121210001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110121210001 is a deficient number, since it is larger than the sum of its proper divisors (10011019103).

110121210001 is a wasteful number, since it uses less digits than its factorization.

110121210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011019102.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 110121210001 its reverse (100012121011), we get a palindrome (210133331012).

The spelling of 110121210001 in words is "one hundred ten billion, one hundred twenty-one million, two hundred ten thousand, one".