10001577221 has 8 divisors (see below), whose sum is σ = 10029358080. Its totient is φ = 9973832688.

The previous prime is 10001577199. The next prime is 10001577247. The reversal of 10001577221 is 12277510001.

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

It is a cyclic number.

It is not a de Polignac number, because 10001577221 - 2¹⁴ = 10001560837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001570221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597200 + ... + 613718.

It is an arithmetic number, because the mean of its divisors is an integer number (1253669760).

Almost surely, 2^10001577221 is an apocalyptic number.

It is an amenable number.

10001577221 is a deficient number, since it is larger than the sum of its proper divisors (27780859).

10001577221 is a wasteful number, since it uses less digits than its factorization.

10001577221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18163.

The product of its (nonzero) digits is 980, while the sum is 26.

The spelling of 10001577221 in words is "ten billion, one million, five hundred seventy-seven thousand, two hundred twenty-one".