2124400003447 has 2 divisors, whose sum is σ = 2124400003448. Its totient is φ = 2124400003446.

The previous prime is 2124400003289. The next prime is 2124400003463. The reversal of 2124400003447 is 7443000044212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2124400003447 - 2¹⁹ = 2124399479159 is a prime.

It is a super-2 number, since 2×2124400003447² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2124400000447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062200001723 + 1062200001724.

It is an arithmetic number, because the mean of its divisors is an integer number (1062200001724).

Almost surely, 2^{2124400003447} is an apocalyptic number.

2124400003447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124400003447 is an equidigital number, since it uses as much as digits as its factorization.

2124400003447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 31.

Adding to 2124400003447 its reverse (7443000044212), we get a palindrome (9567400047659).

The spelling of 2124400003447 in words is "two trillion, one hundred twenty-four billion, four hundred million, three thousand, four hundred forty-seven".