21412400131024 has 60 divisors (see below), whose sum is σ = 48263103549984. Its totient is φ = 9176121484992.

The previous prime is 21412400130937. The next prime is 21412400131081. The reversal of 21412400131024 is 42013100421412.

It is a super-2 number, since 2×21412400131024² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21412400131024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10754107 + ... + 12588709.

Almost surely, 2^{21412400131024} is an apocalyptic number.

It is an amenable number.

21412400131024 is an abundant number, since it is smaller than the sum of its proper divisors (26850703418960).

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

21412400131024 is a wasteful number, since it uses less digits than its factorization.

21412400131024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849512 (or 1849499 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21412400131024 its reverse (42013100421412), we get a palindrome (63425500552436).

The spelling of 21412400131024 in words is "twenty-one trillion, four hundred twelve billion, four hundred million, one hundred thirty-one thousand, twenty-four".