21220675371328 has 28 divisors (see below), whose sum is σ = 42110099017632. Its totient is φ = 10610256721280.

The previous prime is 21220675371319. The next prime is 21220675371349. The reversal of 21220675371328 is 82317357602212.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 7677663 + ... + 10069153.

Almost surely, 2^{21220675371328} is an apocalyptic number.

It is an amenable number.

21220675371328 is a deficient number, since it is larger than the sum of its proper divisors (20889423646304).

21220675371328 is a wasteful number, since it uses less digits than its factorization.

21220675371328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530150 (or 2530140 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 21220675371328 in words is "twenty-one trillion, two hundred twenty billion, six hundred seventy-five million, three hundred seventy-one thousand, three hundred twenty-eight".