21103320133333 has 16 divisors (see below), whose sum is σ = 23420757298176. Its totient is φ = 18913190757120.

The previous prime is 21103320133327. The next prime is 21103320133349. The reversal of 21103320133333 is 33333102330112.

It is a cyclic number.

It is not a de Polignac number, because 21103320133333 - 2¹³ = 21103320125141 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 (21103320133933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120927798 + ... + 121102183.

It is an arithmetic number, because the mean of its divisors is an integer number (1463797331136).

Almost surely, 2^{21103320133333} is an apocalyptic number.

21103320133333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21103320133333 is a deficient number, since it is larger than the sum of its proper divisors (2317437164843).

21103320133333 is a wasteful number, since it uses less digits than its factorization.

21103320133333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242030244.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 21103320133333 its reverse (33333102330112), we get a palindrome (54436422463445).

The spelling of 21103320133333 in words is "twenty-one trillion, one hundred three billion, three hundred twenty million, one hundred thirty-three thousand, three hundred thirty-three".