21200202201211 has 16 divisors (see below), whose sum is σ = 23405226324480. Its totient is φ = 19042319387520.

The previous prime is 21200202201203. The next prime is 21200202201287. The reversal of 21200202201211 is 11210220200212.

It is a happy number.

It is not a de Polignac number, because 21200202201211 - 2³ = 21200202201203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200202201011) 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, 20814190 + ... + 21808963.

It is an arithmetic number, because the mean of its divisors is an integer number (1462826645280).

Almost surely, 2^{21200202201211} is an apocalyptic number.

21200202201211 is a deficient number, since it is larger than the sum of its proper divisors (2205024123269).

21200202201211 is a wasteful number, since it uses less digits than its factorization.

21200202201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42623706.

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

Adding to 21200202201211 its reverse (11210220200212), we get a palindrome (32410422401423).

The spelling of 21200202201211 in words is "twenty-one trillion, two hundred billion, two hundred two million, two hundred one thousand, two hundred eleven".