21331200411 has 6 divisors (see below), whose sum is σ = 30811733940. Its totient is φ = 14220800268.

The previous prime is 21331200403. The next prime is 21331200419. The reversal of 21331200411 is 11400213312.

21331200411 is a `hidden beast` number, since 2 + 133 + 120 + 0 + 411 = 666.

It is an interprime number because it is at equal distance from previous prime (21331200403) and next prime (21331200419).

It is not a de Polignac number, because 21331200411 - 2³ = 21331200403 is a prime.

It is a super-2 number, since 2×21331200411² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21331200419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1185066681 + ... + 1185066698.

It is an arithmetic number, because the mean of its divisors is an integer number (5135288990).

Almost surely, 2^21331200411 is an apocalyptic number.

21331200411 is a deficient number, since it is larger than the sum of its proper divisors (9480533529).

21331200411 is a wasteful number, since it uses less digits than its factorization.

21331200411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370133385 (or 2370133382 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21331200411 its reverse (11400213312), we get a palindrome (32731413723).

The spelling of 21331200411 in words is "twenty-one billion, three hundred thirty-one million, two hundred thousand, four hundred eleven".