10221755438 has 8 divisors (see below), whose sum is σ = 15561478632. Its totient is φ = 5034595896.

The previous prime is 10221755407. The next prime is 10221755503. The reversal of 10221755438 is 83455712201.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38140745 + ... + 38141012.

It is an arithmetic number, because the mean of its divisors is an integer number (1945184829).

Almost surely, 2^10221755438 is an apocalyptic number.

10221755438 is a deficient number, since it is larger than the sum of its proper divisors (5339723194).

10221755438 is an equidigital number, since it uses as much as digits as its factorization.

10221755438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76281826.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 10221755438 in words is "ten billion, two hundred twenty-one million, seven hundred fifty-five thousand, four hundred thirty-eight".