21113342062621 has 8 divisors (see below), whose sum is σ = 22049239697280. Its totient is φ = 20178938281392.

The previous prime is 21113342062597. The next prime is 21113342062639. The reversal of 21113342062621 is 12626024331112.

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 21113342062621 - 2²⁵ = 21113308508189 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 (21113342062321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373434465 + ... + 373490998.

It is an arithmetic number, because the mean of its divisors is an integer number (2756154962160).

Almost surely, 2^{21113342062621} is an apocalyptic number.

It is an amenable number.

21113342062621 is a deficient number, since it is larger than the sum of its proper divisors (935897634659).

21113342062621 is a wasteful number, since it uses less digits than its factorization.

21113342062621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746926715.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 21113342062621 its reverse (12626024331112), we get a palindrome (33739366393733).

The spelling of 21113342062621 in words is "twenty-one trillion, one hundred thirteen billion, three hundred forty-two million, sixty-two thousand, six hundred twenty-one".