21134403414243 has 128 divisors (see below), whose sum is σ = 36808143667200. Its totient is φ = 11736779814144.

The previous prime is 21134403414233. The next prime is 21134403414247. The reversal of 21134403414243 is 34241430443112.

21134403414243 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 4 + 403 + 4 + 1 + 4 + 243 = 666.

It is not a de Polignac number, because 21134403414243 - 2⁸ = 21134403413987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21134403414198 and 21134403414207.

It is not an unprimeable number, because it can be changed into a prime (21134403414247) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 287831271 + ... + 287904687.

It is an arithmetic number, because the mean of its divisors is an integer number (287563622400).

Almost surely, 2^{21134403414243} is an apocalyptic number.

21134403414243 is a deficient number, since it is larger than the sum of its proper divisors (15673740252957).

21134403414243 is a wasteful number, since it uses less digits than its factorization.

21134403414243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73806 (or 73800 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 21134403414243 its reverse (34241430443112), we get a palindrome (55375833857355).

The spelling of 21134403414243 in words is "twenty-one trillion, one hundred thirty-four billion, four hundred three million, four hundred fourteen thousand, two hundred forty-three".