21133016248 has 8 divisors (see below), whose sum is σ = 39624405480. Its totient is φ = 10566508120.

The previous prime is 21133016173. The next prime is 21133016249. The reversal of 21133016248 is 84261033112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133016249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320813508 + ... + 1320813523.

It is an arithmetic number, because the mean of its divisors is an integer number (4953050685).

Almost surely, 2^21133016248 is an apocalyptic number.

It is an amenable number.

21133016248 is a deficient number, since it is larger than the sum of its proper divisors (18491389232).

21133016248 is a wasteful number, since it uses less digits than its factorization.

21133016248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641627037 (or 2641627033 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 21133016248 in words is "twenty-one billion, one hundred thirty-three million, sixteen thousand, two hundred forty-eight".