21330133131011 has 4 divisors (see below), whose sum is σ = 21333052275192. Its totient is φ = 21327213986832.

The previous prime is 21330133131007. The next prime is 21330133131029. The reversal of 21330133131011 is 11013133103312.

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 21330133131011 - 2² = 21330133131007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330133131071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1459561130 + ... + 1459575743.

It is an arithmetic number, because the mean of its divisors is an integer number (5333263068798).

Almost surely, 2^{21330133131011} is an apocalyptic number.

21330133131011 is a deficient number, since it is larger than the sum of its proper divisors (2919144181).

21330133131011 is an equidigital number, since it uses as much as digits as its factorization.

21330133131011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919144180.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 21330133131011 its reverse (11013133103312), we get a palindrome (32343266234323).

The spelling of 21330133131011 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirty-three million, one hundred thirty-one thousand, eleven".