21342200211 has 12 divisors (see below), whose sum is σ = 31249919688. Its totient is φ = 14033227104.

The previous prime is 21342200203. The next prime is 21342200221. The reversal of 21342200211 is 11200224312.

It is a happy number.

21342200211 is a `hidden beast` number, since 213 + 42 + 200 + 211 = 666.

It is not a de Polignac number, because 21342200211 - 2³ = 21342200203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21342200221) 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, 16241505 + ... + 16242818.

It is an arithmetic number, because the mean of its divisors is an integer number (2604159974).

Almost surely, 2^21342200211 is an apocalyptic number.

21342200211 is a deficient number, since it is larger than the sum of its proper divisors (9907719477).

21342200211 is a wasteful number, since it uses less digits than its factorization.

21342200211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32484402 (or 32484399 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21342200211 its reverse (11200224312), we get a palindrome (32542424523).

The spelling of 21342200211 in words is "twenty-one billion, three hundred forty-two million, two hundred thousand, two hundred eleven".