21012200202201 has 16 divisors (see below), whose sum is σ = 30345765352896. Its totient is φ = 12855841471296.

The previous prime is 21012200202187. The next prime is 21012200202209. The reversal of 21012200202201 is 10220200221012.

It is not a de Polignac number, because 21012200202201 - 2⁷ = 21012200202073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21012200202209) 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, 1557144595 + ... + 1557158088.

It is an arithmetic number, because the mean of its divisors is an integer number (1896610334556).

Almost surely, 2^{21012200202201} is an apocalyptic number.

It is an amenable number.

21012200202201 is a deficient number, since it is larger than the sum of its proper divisors (9333565150695).

21012200202201 is a wasteful number, since it uses less digits than its factorization.

21012200202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114302872.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21012200202201 its reverse (10220200221012), we get a palindrome (31232400423213).

The spelling of 21012200202201 in words is "twenty-one trillion, twelve billion, two hundred million, two hundred two thousand, two hundred one".