21200133011 has 4 divisors (see below), whose sum is σ = 21201112152. Its totient is φ = 21199153872.

The previous prime is 21200132971. The next prime is 21200133103. The reversal of 21200133011 is 11033100212.

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 21200133011 - 2¹⁴ = 21200116627 is a prime.

It is a super-2 number, since 2×21200133011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200133211) 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 3 ways as a sum of consecutive naturals, for example, 456341 + ... + 500646.

It is an arithmetic number, because the mean of its divisors is an integer number (5300278038).

Almost surely, 2^21200133011 is an apocalyptic number.

21200133011 is a deficient number, since it is larger than the sum of its proper divisors (979141).

21200133011 is an equidigital number, since it uses as much as digits as its factorization.

21200133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979140.

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

Adding to 21200133011 its reverse (11033100212), we get a palindrome (32233233223).

The spelling of 21200133011 in words is "twenty-one billion, two hundred million, one hundred thirty-three thousand, eleven".