21450201112424 has 48 divisors (see below), whose sum is σ = 46808598077280. Its totient is φ = 9188407747680.

The previous prime is 21450201112399. The next prime is 21450201112441. The reversal of 21450201112424 is 42421110205412.

It is a super-2 number, since 2×21450201112424² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12703172 + ... + 14292339.

It is an arithmetic number, because the mean of its divisors is an integer number (975179126610).

Almost surely, 2^{21450201112424} is an apocalyptic number.

It is an amenable number.

21450201112424 is an abundant number, since it is smaller than the sum of its proper divisors (25358396964856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21450201112424 is a wasteful number, since it uses less digits than its factorization.

21450201112424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26997558 (or 26997547 counting only the distinct ones).

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

Adding to 21450201112424 its reverse (42421110205412), we get a palindrome (63871311317836).

The spelling of 21450201112424 in words is "twenty-one trillion, four hundred fifty billion, two hundred one million, one hundred twelve thousand, four hundred twenty-four".