110100001212121 has 4 divisors (see below), whose sum is σ = 110100025098000. Its totient is φ = 110099977326244.

The previous prime is 110100001212107. The next prime is 110100001212191. The reversal of 110100001212121 is 121212100001011.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110100001212121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110100001212191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584291 + ... + 15062488.

It is an arithmetic number, because the mean of its divisors is an integer number (27525006274500).

Almost surely, 2^{110100001212121} is an apocalyptic number.

It is an amenable number.

110100001212121 is a deficient number, since it is larger than the sum of its proper divisors (23885879).

110100001212121 is an equidigital number, since it uses as much as digits as its factorization.

110100001212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23885878.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110100001212121 its reverse (121212100001011), we get a palindrome (231312101213132).

The spelling of 110100001212121 in words is "one hundred ten trillion, one hundred billion, one million, two hundred twelve thousand, one hundred twenty-one".