21013012033301 has 4 divisors (see below), whose sum is σ = 21080577988704. Its totient is φ = 20945446077900.

The previous prime is 21013012033271. The next prime is 21013012033313. The reversal of 21013012033301 is 10333021031012.

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-21013012033301 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 (21013012033501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33782977235 + ... + 33782977856.

It is an arithmetic number, because the mean of its divisors is an integer number (5270144497176).

Almost surely, 2^{21013012033301} is an apocalyptic number.

It is an amenable number.

21013012033301 is a deficient number, since it is larger than the sum of its proper divisors (67565955403).

21013012033301 is an equidigital number, since it uses as much as digits as its factorization.

21013012033301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67565955402.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21013012033301 its reverse (10333021031012), we get a palindrome (31346033064313).

The spelling of 21013012033301 in words is "twenty-one trillion, thirteen billion, twelve million, thirty-three thousand, three hundred one".