20124248983921 has 8 divisors (see below), whose sum is σ = 21011033602944. Its totient is φ = 19238449137600.

The previous prime is 20124248983871. The next prime is 20124248983939. The reversal of 20124248983921 is 12938984242102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20124248983921 - 2¹¹ = 20124248981873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20124248983981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246151405 + ... + 246233146.

It is an arithmetic number, because the mean of its divisors is an integer number (2626379200368).

Almost surely, 2^{20124248983921} is an apocalyptic number.

It is an amenable number.

20124248983921 is a deficient number, since it is larger than the sum of its proper divisors (886784619023).

20124248983921 is a wasteful number, since it uses less digits than its factorization.

20124248983921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492386351.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 20124248983921 in words is "twenty trillion, one hundred twenty-four billion, two hundred forty-eight million, nine hundred eighty-three thousand, nine hundred twenty-one".