100120200201001 has 4 divisors (see below), whose sum is σ = 101111489312004. Its totient is φ = 99128911090000.

The previous prime is 100120200200989. The next prime is 100120200201059. The reversal of 100120200201001 is 100102002021001.

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 78082583509225 + 22037616691776 = 8836435^2 + 4694424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100120200201001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120270201001) 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, 495644555350 + ... + 495644555551.

It is an arithmetic number, because the mean of its divisors is an integer number (25277872328001).

Almost surely, 2^{100120200201001} is an apocalyptic number.

It is an amenable number.

100120200201001 is a deficient number, since it is larger than the sum of its proper divisors (991289111003).

100120200201001 is an equidigital number, since it uses as much as digits as its factorization.

100120200201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991289111002.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100120200201001 its reverse (100102002021001), we get a palindrome (200222202222002).

The spelling of 100120200201001 in words is "one hundred trillion, one hundred twenty billion, two hundred million, two hundred one thousand, one".