21113342413 has 8 divisors (see below), whose sum is σ = 21234539232. Its totient is φ = 20992393296.

The previous prime is 21113342363. The next prime is 21113342473. The reversal of 21113342413 is 31424331112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113342413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113342473) 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, 110406 + ... + 233272.

It is an arithmetic number, because the mean of its divisors is an integer number (2654317404).

Almost surely, 2^21113342413 is an apocalyptic number.

It is an amenable number.

21113342413 is a deficient number, since it is larger than the sum of its proper divisors (121196819).

21113342413 is a wasteful number, since it uses less digits than its factorization.

21113342413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123851.

The product of its digits is 1728, while the sum is 25.

Adding to 21113342413 its reverse (31424331112), we get a palindrome (52537673525).

The spelling of 21113342413 in words is "twenty-one billion, one hundred thirteen million, three hundred forty-two thousand, four hundred thirteen".