201202100200021 has 2 divisors, whose sum is σ = 201202100200022. Its totient is φ = 201202100200020.

The previous prime is 201202100200009. The next prime is 201202100200027. The reversal of 201202100200021 is 120002001202102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189936081792900 + 11266018407121 = 13781730^2 + 3356489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201202100200021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201202100199974 and 201202100200010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201202100200027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100601050100010 + 100601050100011.

It is an arithmetic number, because the mean of its divisors is an integer number (100601050100011).

Almost surely, 2^{201202100200021} is an apocalyptic number.

It is an amenable number.

201202100200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201202100200021 is an equidigital number, since it uses as much as digits as its factorization.

201202100200021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201202100200021 its reverse (120002001202102), we get a palindrome (321204101402123).

The spelling of 201202100200021 in words is "two hundred one trillion, two hundred two billion, one hundred million, two hundred thousand, twenty-one".