100120100021201 has 4 divisors (see below), whose sum is σ = 107821646176692. Its totient is φ = 92418553865712.

The previous prime is 100120100021167. The next prime is 100120100021231. The reversal of 100120100021201 is 102120001021001.

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 64784791210000 + 35335308811201 = 8048900^2 + 5944351^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120100021201 - 2¹⁰ = 100120100020177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120100021231) 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, 3850773077726 + ... + 3850773077751.

It is an arithmetic number, because the mean of its divisors is an integer number (26955411544173).

Almost surely, 2^{100120100021201} is an apocalyptic number.

It is an amenable number.

100120100021201 is a deficient number, since it is larger than the sum of its proper divisors (7701546155491).

100120100021201 is an equidigital number, since it uses as much as digits as its factorization.

100120100021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701546155490.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100120100021201 its reverse (102120001021001), we get a palindrome (202240101042202).

The spelling of 100120100021201 in words is "one hundred trillion, one hundred twenty billion, one hundred million, twenty-one thousand, two hundred one".