21013333301 has 4 divisors (see below), whose sum is σ = 21926956512. Its totient is φ = 20099710092.

The previous prime is 21013333283. The next prime is 21013333307. The reversal of 21013333301 is 10333331012.

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 a de Polignac number, because none of the positive numbers 2^k-21013333301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013333307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456811571 + ... + 456811616.

It is an arithmetic number, because the mean of its divisors is an integer number (5481739128).

Almost surely, 2^21013333301 is an apocalyptic number.

It is an amenable number.

21013333301 is a deficient number, since it is larger than the sum of its proper divisors (913623211).

21013333301 is an equidigital number, since it uses as much as digits as its factorization.

21013333301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913623210.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 21013333301 its reverse (10333331012), we get a palindrome (31346664313).

The spelling of 21013333301 in words is "twenty-one billion, thirteen million, three hundred thirty-three thousand, three hundred one".