21200301311 has 16 divisors (see below), whose sum is σ = 24539687424. Its totient is φ = 17938945824.

The previous prime is 21200301263. The next prime is 21200301323. The reversal of 21200301311 is 11310300212.

It is a cyclic number.

It is not a de Polignac number, because 21200301311 - 2¹⁰ = 21200300287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200301341) 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, 780881 + ... + 807573.

It is an arithmetic number, because the mean of its divisors is an integer number (1533730464).

Almost surely, 2^21200301311 is an apocalyptic number.

21200301311 is a deficient number, since it is larger than the sum of its proper divisors (3339386113).

21200301311 is a wasteful number, since it uses less digits than its factorization.

21200301311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28150.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21200301311 its reverse (11310300212), we get a palindrome (32510601523).

The spelling of 21200301311 in words is "twenty-one billion, two hundred million, three hundred one thousand, three hundred eleven".