21210102002201 has 12 divisors (see below), whose sum is σ = 25749881622528. Its totient is φ = 17110670521152.

The previous prime is 21210102002161. The next prime is 21210102002231. The reversal of 21210102002201 is 10220020101212.

It is not a de Polignac number, because 21210102002201 - 2¹⁰ = 21210102001177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210102002231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5242237721 + ... + 5242241766.

It is an arithmetic number, because the mean of its divisors is an integer number (2145823468544).

Almost surely, 2^{21210102002201} is an apocalyptic number.

It is an amenable number.

21210102002201 is a deficient number, since it is larger than the sum of its proper divisors (4539779620327).

21210102002201 is a wasteful number, since it uses less digits than its factorization.

21210102002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10484479528 (or 10484479511 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210102002201 its reverse (10220020101212), we get a palindrome (31430122103413).

The spelling of 21210102002201 in words is "twenty-one trillion, two hundred ten billion, one hundred two million, two thousand, two hundred one".