100000121020201 has 4 divisors (see below), whose sum is σ = 100003617923332. Its totient is φ = 99996624117072.

The previous prime is 100000121020171. The next prime is 100000121020271. The reversal of 100000121020201 is 102020121000001.

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 80459123949801 + 19540997070400 = 8969901^2 + 4420520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100000121020201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000121020271) 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, 1748408670 + ... + 1748465863.

It is an arithmetic number, because the mean of its divisors is an integer number (25000904480833).

Almost surely, 2^{100000121020201} is an apocalyptic number.

It is an amenable number.

100000121020201 is a deficient number, since it is larger than the sum of its proper divisors (3496903131).

100000121020201 is an equidigital number, since it uses as much as digits as its factorization.

100000121020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496903130.

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

Adding to 100000121020201 its reverse (102020121000001), we get a palindrome (202020242020202).

The spelling of 100000121020201 in words is "one hundred trillion, one hundred twenty-one million, twenty thousand, two hundred one".