21113213312003 has 2 divisors, whose sum is σ = 21113213312004. Its totient is φ = 21113213312002.

The previous prime is 21113213311987. The next prime is 21113213312039. The reversal of 21113213312003 is 30021331231112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21113213312003 - 2⁴ = 21113213311987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21113213312003.

It is not a weakly prime, because it can be changed into another prime (21113213312603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556606656001 + 10556606656002.

It is an arithmetic number, because the mean of its divisors is an integer number (10556606656002).

Almost surely, 2^{21113213312003} is an apocalyptic number.

21113213312003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113213312003 is an equidigital number, since it uses as much as digits as its factorization.

21113213312003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21113213312003 its reverse (30021331231112), we get a palindrome (51134544543115).

The spelling of 21113213312003 in words is "twenty-one trillion, one hundred thirteen billion, two hundred thirteen million, three hundred twelve thousand, three".