21122842588 has 48 divisors (see below), whose sum is σ = 37933197120. Its totient is φ = 10288627200.

The previous prime is 21122842561. The next prime is 21122842591. The reversal of 21122842588 is 88524822112.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13127128 + ... + 13128736.

It is an arithmetic number, because the mean of its divisors is an integer number (790274940).

Almost surely, 2^21122842588 is an apocalyptic number.

It is an amenable number.

21122842588 is a deficient number, since it is larger than the sum of its proper divisors (16810354532).

21122842588 is a wasteful number, since it uses less digits than its factorization.

21122842588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158 (or 2156 counting only the distinct ones).

The product of its digits is 163840, while the sum is 43.

The spelling of 21122842588 in words is "twenty-one billion, one hundred twenty-two million, eight hundred forty-two thousand, five hundred eighty-eight".