21010202000201 has 16 divisors (see below), whose sum is σ = 22232876433408. Its totient is φ = 19813303448400.

The previous prime is 21010202000197. The next prime is 21010202000233. The reversal of 21010202000201 is 10200020201012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21010202000201 - 2² = 21010202000197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010202080201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146125736 + ... + 146269446.

It is an arithmetic number, because the mean of its divisors is an integer number (1389554777088).

Almost surely, 2^{21010202000201} is an apocalyptic number.

It is an amenable number.

21010202000201 is a deficient number, since it is larger than the sum of its proper divisors (1222674433207).

21010202000201 is a wasteful number, since it uses less digits than its factorization.

21010202000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233332.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21010202000201 its reverse (10200020201012), we get a palindrome (31210222201213).

The spelling of 21010202000201 in words is "twenty-one trillion, ten billion, two hundred two million, two hundred one", and thus it is an aban number.