21124344003413 has 32 divisors (see below), whose sum is σ = 27775599575040. Its totient is φ = 15623774657280.

The previous prime is 21124344003349. The next prime is 21124344003421. The reversal of 21124344003413 is 31430044342112.

It is not a de Polignac number, because 21124344003413 - 2⁶ = 21124344003349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21124344003413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124344003473) 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, 150622181 + ... + 150762362.

It is an arithmetic number, because the mean of its divisors is an integer number (867987486720).

Almost surely, 2^{21124344003413} is an apocalyptic number.

It is an amenable number.

21124344003413 is a deficient number, since it is larger than the sum of its proper divisors (6651255571627).

21124344003413 is a wasteful number, since it uses less digits than its factorization.

21124344003413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301384617.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21124344003413 its reverse (31430044342112), we get a palindrome (52554388345525).

The spelling of 21124344003413 in words is "twenty-one trillion, one hundred twenty-four billion, three hundred forty-four million, three thousand, four hundred thirteen".