21301223213333 has 32 divisors (see below), whose sum is σ = 24983406539520. Its totient is φ = 17781353694720.

The previous prime is 21301223213321. The next prime is 21301223213357. The reversal of 21301223213333 is 33331232210312.

It is not a de Polignac number, because 21301223213333 - 2⁶ = 21301223213269 is a prime.

It is a super-2 number, since 2×21301223213333² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21301223213296 and 21301223213305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301223213393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301216583 + ... + 301287291.

It is an arithmetic number, because the mean of its divisors is an integer number (780731454360).

Almost surely, 2^{21301223213333} is an apocalyptic number.

It is an amenable number.

21301223213333 is a deficient number, since it is larger than the sum of its proper divisors (3682183326187).

21301223213333 is a wasteful number, since it uses less digits than its factorization.

21301223213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73677.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21301223213333 its reverse (33331232210312), we get a palindrome (54632455423645).

The spelling of 21301223213333 in words is "twenty-one trillion, three hundred one billion, two hundred twenty-three million, two hundred thirteen thousand, three hundred thirty-three".