21244114415 has 16 divisors (see below), whose sum is σ = 26844894720. Its totient is φ = 16094668320.

The previous prime is 21244114399. The next prime is 21244114417. The reversal of 21244114415 is 51441144212.

It is not a de Polignac number, because 21244114415 - 2⁴ = 21244114399 is a prime.

It is a super-2 number, since 2×21244114415² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244114417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216302 + ... + 298788.

It is an arithmetic number, because the mean of its divisors is an integer number (1677805920).

Almost surely, 2^21244114415 is an apocalyptic number.

21244114415 is a deficient number, since it is larger than the sum of its proper divisors (5600780305).

21244114415 is a wasteful number, since it uses less digits than its factorization.

21244114415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85222.

The product of its digits is 5120, while the sum is 29.

Adding to 21244114415 its reverse (51441144212), we get a palindrome (72685258627).

The spelling of 21244114415 in words is "twenty-one billion, two hundred forty-four million, one hundred fourteen thousand, four hundred fifteen".