100122121010201 has 4 divisors (see below), whose sum is σ = 100217566312500. Its totient is φ = 100026675707904.

The previous prime is 100122121010173. The next prime is 100122121010203. The reversal of 100122121010201 is 102010121221001.

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 82964498995225 + 17157622014976 = 9108485^2 + 4142176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100122121010201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100122121010203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47722649576 + ... + 47722651673.

It is an arithmetic number, because the mean of its divisors is an integer number (25054391578125).

Almost surely, 2^{100122121010201} is an apocalyptic number.

It is an amenable number.

100122121010201 is a deficient number, since it is larger than the sum of its proper divisors (95445302299).

100122121010201 is an equidigital number, since it uses as much as digits as its factorization.

100122121010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95445302298.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100122121010201 its reverse (102010121221001), we get a palindrome (202132242231202).

The spelling of 100122121010201 in words is "one hundred trillion, one hundred twenty-two billion, one hundred twenty-one million, ten thousand, two hundred one".