21333411413 has 8 divisors (see below), whose sum is σ = 22467117600. Its totient is φ = 20200794768.

The previous prime is 21333411383. The next prime is 21333411443. The reversal of 21333411413 is 31411433312.

It is an interprime number because it is at equal distance from previous prime (21333411383) and next prime (21333411443).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21333411413 - 2⁶ = 21333411349 is a prime.

It is a super-2 number, since 2×21333411413² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333411443) 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 7 ways as a sum of consecutive naturals, for example, 232031 + ... + 310652.

It is an arithmetic number, because the mean of its divisors is an integer number (2808389700).

Almost surely, 2^21333411413 is an apocalyptic number.

It is an amenable number.

21333411413 is a deficient number, since it is larger than the sum of its proper divisors (1133706187).

21333411413 is a wasteful number, since it uses less digits than its factorization.

21333411413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544771.

The product of its digits is 2592, while the sum is 26.

Adding to 21333411413 its reverse (31411433312), we get a palindrome (52744844725).

The spelling of 21333411413 in words is "twenty-one billion, three hundred thirty-three million, four hundred eleven thousand, four hundred thirteen".