10000102020121 has 4 divisors (see below), whose sum is σ = 10000415800372. Its totient is φ = 9999788239872.

The previous prime is 10000102020067. The next prime is 10000102020133. The reversal of 10000102020121 is 12102020100001.

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 1963330613721 + 8036771406400 = 1401189^2 + 2834920^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000102020121 - 2²⁹ = 9999565149209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000102020098 and 10000102020107.

It is not an unprimeable number, because it can be changed into a prime (10000102020521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156842316 + ... + 156906061.

It is an arithmetic number, because the mean of its divisors is an integer number (2500103950093).

Almost surely, 2^{10000102020121} is an apocalyptic number.

It is an amenable number.

10000102020121 is a deficient number, since it is larger than the sum of its proper divisors (313780251).

10000102020121 is an equidigital number, since it uses as much as digits as its factorization.

10000102020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313780250.

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

Adding to 10000102020121 its reverse (12102020100001), we get a palindrome (22102122120122).

The spelling of 10000102020121 in words is "ten trillion, one hundred two million, twenty thousand, one hundred twenty-one".