21133212301 has 4 divisors (see below), whose sum is σ = 21491402400. Its totient is φ = 20775022204.

The previous prime is 21133212277. The next prime is 21133212313. The reversal of 21133212301 is 10321233112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21133212301 - 2⁷ = 21133212173 is a prime.

It is a super-2 number, since 2×21133212301² (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 (21133212371) 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, 179094961 + ... + 179095078.

It is an arithmetic number, because the mean of its divisors is an integer number (5372850600).

Almost surely, 2^21133212301 is an apocalyptic number.

It is an amenable number.

21133212301 is a deficient number, since it is larger than the sum of its proper divisors (358190099).

21133212301 is an equidigital number, since it uses as much as digits as its factorization.

21133212301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358190098.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21133212301 its reverse (10321233112), we get a palindrome (31454445413).

The spelling of 21133212301 in words is "twenty-one billion, one hundred thirty-three million, two hundred twelve thousand, three hundred one".