21124631882 has 8 divisors (see below), whose sum is σ = 31737166752. Its totient is φ = 10545576300.

The previous prime is 21124631881. The next prime is 21124631903. The reversal of 21124631882 is 28813642112.

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

It is not an unprimeable number, because it can be changed into a prime (21124631881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8368244 + ... + 8370767.

It is an arithmetic number, because the mean of its divisors is an integer number (3967145844).

Almost surely, 2^21124631882 is an apocalyptic number.

21124631882 is a deficient number, since it is larger than the sum of its proper divisors (10612534870).

21124631882 is a wasteful number, since it uses less digits than its factorization.

21124631882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16739644.

The product of its digits is 36864, while the sum is 38.

The spelling of 21124631882 in words is "twenty-one billion, one hundred twenty-four million, six hundred thirty-one thousand, eight hundred eighty-two".