21342200311 has 4 divisors (see below), whose sum is σ = 21862741824. Its totient is φ = 20821658800.

The previous prime is 21342200293. The next prime is 21342200353. The reversal of 21342200311 is 11300224312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21342200311 - 2⁹ = 21342199799 is a prime.

It is a super-2 number, since 2×21342200311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260270695 + ... + 260270776.

It is an arithmetic number, because the mean of its divisors is an integer number (5465685456).

Almost surely, 2^21342200311 is an apocalyptic number.

21342200311 is a deficient number, since it is larger than the sum of its proper divisors (520541513).

21342200311 is an equidigital number, since it uses as much as digits as its factorization.

21342200311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520541512.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21342200311 its reverse (11300224312), we get a palindrome (32642424623).

The spelling of 21342200311 in words is "twenty-one billion, three hundred forty-two million, two hundred thousand, three hundred eleven".