21113424213415 has 8 divisors (see below), whose sum is σ = 25765534633680. Its totient is φ = 16604455652352.

The previous prime is 21113424213407. The next prime is 21113424213521. The reversal of 21113424213415 is 51431242431112.

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 21113424213415 - 2³ = 21113424213407 is a prime.

It is a super-2 number, since 2×21113424213415² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35785464474 + ... + 35785465063.

It is an arithmetic number, because the mean of its divisors is an integer number (3220691829210).

Almost surely, 2^{21113424213415} is an apocalyptic number.

21113424213415 is a deficient number, since it is larger than the sum of its proper divisors (4652110420265).

21113424213415 is an equidigital number, since it uses as much as digits as its factorization.

21113424213415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71570929601.

The product of its digits is 23040, while the sum is 34.

Adding to 21113424213415 its reverse (51431242431112), we get a palindrome (72544666644527).

The spelling of 21113424213415 in words is "twenty-one trillion, one hundred thirteen billion, four hundred twenty-four million, two hundred thirteen thousand, four hundred fifteen".