1000021210201 has 16 divisors (see below), whose sum is σ = 1087714848528. Its totient is φ = 913867776000.

The previous prime is 1000021210193. The next prime is 1000021210229. The reversal of 1000021210201 is 1020121200001.

It can be written as a sum of positive squares in 8 ways, for example, as 400866259600 + 599154950601 = 633140^2 + 774051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000021210201 - 2³ = 1000021210193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000021210231) 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, 16093945 + ... + 16155961.

It is an arithmetic number, because the mean of its divisors is an integer number (67982178033).

Almost surely, 2^{1000021210201} is an apocalyptic number.

It is an amenable number.

1000021210201 is a deficient number, since it is larger than the sum of its proper divisors (87693638327).

1000021210201 is a wasteful number, since it uses less digits than its factorization.

1000021210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74412.

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

Adding to 1000021210201 its reverse (1020121200001), we get a palindrome (2020142410202).

The spelling of 1000021210201 in words is "one trillion, twenty-one million, two hundred ten thousand, two hundred one".