101200001210001 has 8 divisors (see below), whose sum is σ = 149925927718560. Its totient is φ = 67466667473316.

The previous prime is 101200001209991. The next prime is 101200001210041. The reversal of 101200001210001 is 100012100002101.

It is a happy number.

It is not a de Polignac number, because 101200001210001 - 2¹¹ = 101200001207953 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 (101200001210041) 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 7 ways as a sum of consecutive naturals, for example, 1874074096455 + ... + 1874074096508.

It is an arithmetic number, because the mean of its divisors is an integer number (18740740964820).

Almost surely, 2^{101200001210001} is an apocalyptic number.

It is an amenable number.

101200001210001 is a deficient number, since it is larger than the sum of its proper divisors (48725926508559).

101200001210001 is an equidigital number, since it uses as much as digits as its factorization.

101200001210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748148192972 (or 3748148192966 counting only the distinct ones).

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

Adding to 101200001210001 its reverse (100012100002101), we get a palindrome (201212101212102).

The spelling of 101200001210001 in words is "one hundred one trillion, two hundred billion, one million, two hundred ten thousand, one".