21154033214343 has 12 divisors (see below), whose sum is σ = 30556244824560. Its totient is φ = 14102495392416.

The previous prime is 21154033214329. The next prime is 21154033214381. The reversal of 21154033214343 is 34341233045112.

21154033214343 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 403 + 3 + 214 + 34 + 3 = 666.

It is not a de Polignac number, because 21154033214343 - 2⁵ = 21154033214311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21154033214298 and 21154033214307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21154033218343) by changing a digit.

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, 15423846 + ... + 16739267.

It is an arithmetic number, because the mean of its divisors is an integer number (2546353735380).

Almost surely, 2^{21154033214343} is an apocalyptic number.

21154033214343 is a deficient number, since it is larger than the sum of its proper divisors (9402211610217).

21154033214343 is a wasteful number, since it uses less digits than its factorization.

21154033214343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32236198 (or 32236195 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 21154033214343 its reverse (34341233045112), we get a palindrome (55495266259455).

The spelling of 21154033214343 in words is "twenty-one trillion, one hundred fifty-four billion, thirty-three million, two hundred fourteen thousand, three hundred forty-three".