21213543315096 has 128 divisors (see below), whose sum is σ = 66500136000000. Its totient is φ = 6206679319680.

The previous prime is 21213543315073. The next prime is 21213543315143. The reversal of 21213543315096 is 69051334531212.

21213543315096 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 543 + 3 + 15 + 0 + 96 = 666.

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 31 ways as a sum of consecutive naturals, for example, 153866596 + ... + 154004403.

It is an arithmetic number, because the mean of its divisors is an integer number (519532312500).

Almost surely, 2^{21213543315096} is an apocalyptic number.

It is an amenable number.

21213543315096 is an abundant number, since it is smaller than the sum of its proper divisors (45286592684904).

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

21213543315096 is a wasteful number, since it uses less digits than its factorization.

21213543315096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307871054 (or 307871044 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 21213543315096 in words is "twenty-one trillion, two hundred thirteen billion, five hundred forty-three million, three hundred fifteen thousand, ninety-six".