21888220327144 has 64 divisors (see below), whose sum is σ = 41836702279680. Its totient is φ = 10734276480000.

The previous prime is 21888220327121. The next prime is 21888220327151. The reversal of 21888220327144 is 44172302288812.

It is a junction number, because it is equal to n+sod(n) for n = 21888220327091 and 21888220327100.

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, 36898797 + ... + 37487299.

It is an arithmetic number, because the mean of its divisors is an integer number (653698473120).

Almost surely, 2^{21888220327144} is an apocalyptic number.

It is an amenable number.

21888220327144 is a deficient number, since it is larger than the sum of its proper divisors (19948481952536).

21888220327144 is a wasteful number, since it uses less digits than its factorization.

21888220327144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589042 (or 589038 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 52.

The spelling of 21888220327144 in words is "twenty-one trillion, eight hundred eighty-eight billion, two hundred twenty million, three hundred twenty-seven thousand, one hundred forty-four".