110001200120001 has 16 divisors (see below), whose sum is σ = 166432075833600. Its totient is φ = 71773832701584.

The previous prime is 110001200119849. The next prime is 110001200120039. The reversal of 110001200120001 is 100021002100011.

It is a happy number.

It is not a de Polignac number, because 110001200120001 - 2²⁵ = 110001166565569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (110001200120041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43341685146 + ... + 43341687683.

It is an arithmetic number, because the mean of its divisors is an integer number (10402004739600).

Almost surely, 2^{110001200120001} is an apocalyptic number.

It is an amenable number.

110001200120001 is a deficient number, since it is larger than the sum of its proper divisors (56430875713599).

110001200120001 is an equidigital number, since it uses as much as digits as its factorization.

110001200120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86683372885 (or 86683372879 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 110001200120001 its reverse (100021002100011), we get a palindrome (210022202220012).

The spelling of 110001200120001 in words is "one hundred ten trillion, one billion, two hundred million, one hundred twenty thousand, one".