21424100240410 has 64 divisors (see below), whose sum is σ = 44852226660864. Its totient is φ = 7216176844800.

The previous prime is 21424100240359. The next prime is 21424100240441. The reversal of 21424100240410 is 1404200142412.

It is a happy number.

It is a super-2 number, since 2×21424100240410² (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 31 ways as a sum of consecutive naturals, for example, 6273687 + ... + 9066826.

It is an arithmetic number, because the mean of its divisors is an integer number (700816041576).

Almost surely, 2^{21424100240410} is an apocalyptic number.

21424100240410 is an abundant number, since it is smaller than the sum of its proper divisors (23428126420454).

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

21424100240410 is a wasteful number, since it uses less digits than its factorization.

21424100240410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340879.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 21424100240410 its reverse (1404200142412), we get a palindrome (22828300382822).

The spelling of 21424100240410 in words is "twenty-one trillion, four hundred twenty-four billion, one hundred million, two hundred forty thousand, four hundred ten".