21111013321003 has 4 divisors (see below), whose sum is σ = 21111074918608. Its totient is φ = 21110951723400.

The previous prime is 21111013320919. The next prime is 21111013321031. The reversal of 21111013321003 is 30012331011112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21111013321003 - 2³³ = 21102423386411 is a prime.

It is a super-2 number, since 2×21111013321003² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21111013321063) 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, 30281823 + ... + 30971128.

It is an arithmetic number, because the mean of its divisors is an integer number (5277768729652).

Almost surely, 2^{21111013321003} is an apocalyptic number.

21111013321003 is a deficient number, since it is larger than the sum of its proper divisors (61597605).

21111013321003 is an equidigital number, since it uses as much as digits as its factorization.

21111013321003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61597604.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21111013321003 its reverse (30012331011112), we get a palindrome (51123344332115).

The spelling of 21111013321003 in words is "twenty-one trillion, one hundred eleven billion, thirteen million, three hundred twenty-one thousand, three".