21210122200201 has 16 divisors (see below), whose sum is σ = 23181922474560. Its totient is φ = 19245610659520.

The previous prime is 21210122200193. The next prime is 21210122200247. The reversal of 21210122200201 is 10200222101212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21210122200201 - 2³ = 21210122200193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210122200271) 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, 19901955 + ... + 20940583.

It is an arithmetic number, because the mean of its divisors is an integer number (1448870154660).

Almost surely, 2^{21210122200201} is an apocalyptic number.

It is an amenable number.

21210122200201 is a deficient number, since it is larger than the sum of its proper divisors (1971800274359).

21210122200201 is a wasteful number, since it uses less digits than its factorization.

21210122200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042136.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21210122200201 its reverse (10200222101212), we get a palindrome (31410344301413).

The spelling of 21210122200201 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred thousand, two hundred one".