21514242123245 has 8 divisors (see below), whose sum is σ = 26304205464216. Its totient is φ = 16886650421056.

The previous prime is 21514242123221. The next prime is 21514242123251. The reversal of 21514242123245 is 54232124241512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11358018867556 + 10156223255689 = 3370166^2 + 3186883^2 .

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 21514242123245 - 2¹⁰ = 21514242122221 is a prime.

It is a super-2 number, since 2×21514242123245² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21514242123199 and 21514242123208.

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, 40592909402 + ... + 40592909931.

It is an arithmetic number, because the mean of its divisors is an integer number (3288025683027).

Almost surely, 2^{21514242123245} is an apocalyptic number.

It is an amenable number.

21514242123245 is a deficient number, since it is larger than the sum of its proper divisors (4789963340971).

21514242123245 is an equidigital number, since it uses as much as digits as its factorization.

21514242123245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81185819391.

The product of its digits is 153600, while the sum is 38.

Adding to 21514242123245 its reverse (54232124241512), we get a palindrome (75746366364757).

The spelling of 21514242123245 in words is "twenty-one trillion, five hundred fourteen billion, two hundred forty-two million, one hundred twenty-three thousand, two hundred forty-five".