10010202100121 has 2 divisors, whose sum is σ = 10010202100122. Its totient is φ = 10010202100120.

The previous prime is 10010202100117. The next prime is 10010202100139. The reversal of 10010202100121 is 12100120201001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8479511041600 + 1530691058521 = 2911960^2 + 1237211^2 .

It is a cyclic number.

It is not a de Polignac number, because 10010202100121 - 2² = 10010202100117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10010202100021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005101050060 + 5005101050061.

It is an arithmetic number, because the mean of its divisors is an integer number (5005101050061).

Almost surely, 2^{10010202100121} is an apocalyptic number.

It is an amenable number.

10010202100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010202100121 is an equidigital number, since it uses as much as digits as its factorization.

10010202100121 is an evil number, because the sum of its binary digits is even.

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

Adding to 10010202100121 its reverse (12100120201001), we get a palindrome (22110322301122).

The spelling of 10010202100121 in words is "ten trillion, ten billion, two hundred two million, one hundred thousand, one hundred twenty-one".