21333111133313 has 16 divisors (see below), whose sum is σ = 24928767623424. Its totient is φ = 17878061914560.

The previous prime is 21333111133297. The next prime is 21333111133363. The reversal of 21333111133313 is 31333111133312.

It is a cyclic number.

It is not a de Polignac number, because 21333111133313 - 2⁴ = 21333111133297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21333111133363) 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, 149510870 + ... + 149653487.

It is an arithmetic number, because the mean of its divisors is an integer number (1558047976464).

Almost surely, 2^{21333111133313} is an apocalyptic number.

It is an amenable number.

21333111133313 is a deficient number, since it is larger than the sum of its proper divisors (3595656490111).

21333111133313 is a wasteful number, since it uses less digits than its factorization.

21333111133313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299164592.

The product of its digits is 4374, while the sum is 29.

Adding to 21333111133313 its reverse (31333111133312), we get a palindrome (52666222266625).

Subtracting 21333111133313 from its reverse (31333111133312), we obtain a palindrome (9999999999999).

The spelling of 21333111133313 in words is "twenty-one trillion, three hundred thirty-three billion, one hundred eleven million, one hundred thirty-three thousand, three hundred thirteen".