21303213111313 has 16 divisors (see below), whose sum is σ = 24510967088256. Its totient is φ = 18136772956800.

The previous prime is 21303213111311. The next prime is 21303213111403. The reversal of 21303213111313 is 31311131230312.

It is a cyclic number.

It is not a de Polignac number, because 21303213111313 - 2¹ = 21303213111311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303213111311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7263763 + ... + 9765688.

It is an arithmetic number, because the mean of its divisors is an integer number (1531935443016).

Almost surely, 2^{21303213111313} is an apocalyptic number.

It is an amenable number.

21303213111313 is a deficient number, since it is larger than the sum of its proper divisors (3207753976943).

21303213111313 is a wasteful number, since it uses less digits than its factorization.

21303213111313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030664.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 21303213111313 its reverse (31311131230312), we get a palindrome (52614344341625).

The spelling of 21303213111313 in words is "twenty-one trillion, three hundred three billion, two hundred thirteen million, one hundred eleven thousand, three hundred thirteen".