21303103000133 has 4 divisors (see below), whose sum is σ = 22229324869728. Its totient is φ = 20376881130540.

The previous prime is 21303103000111. The next prime is 21303103000141. The reversal of 21303103000133 is 33100030130312.

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 21303103000133 - 2¹⁴ = 21303102983749 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 (21303103000633) 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, 463110934763 + ... + 463110934808.

It is an arithmetic number, because the mean of its divisors is an integer number (5557331217432).

Almost surely, 2^{21303103000133} is an apocalyptic number.

21303103000133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21303103000133 is a deficient number, since it is larger than the sum of its proper divisors (926221869595).

21303103000133 is an equidigital number, since it uses as much as digits as its factorization.

21303103000133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926221869594.

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

Adding to 21303103000133 its reverse (33100030130312), we get a palindrome (54403133130445).

The spelling of 21303103000133 in words is "twenty-one trillion, three hundred three billion, one hundred three million, one hundred thirty-three", and thus it is an aban number.