9010897221 has 16 divisors (see below), whose sum is σ = 12319655040. Its totient is φ = 5854990080.

The previous prime is 9010897219. The next prime is 9010897223. The reversal of 9010897221 is 1227980109.

It is an interprime number because it is at equal distance from previous prime (9010897219) and next prime (9010897223).

It is not a de Polignac number, because 9010897221 - 2¹ = 9010897219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9010897221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9010897223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91600 + ... + 162518.

It is an arithmetic number, because the mean of its divisors is an integer number (769978440).

Almost surely, 2^9010897221 is an apocalyptic number.

It is an amenable number.

9010897221 is a deficient number, since it is larger than the sum of its proper divisors (3308757819).

9010897221 is a wasteful number, since it uses less digits than its factorization.

9010897221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71996.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 9010897221 is about 94925.7458279892. The cubic root of 9010897221 is about 2080.9230078962.

The spelling of 9010897221 in words is "nine billion, ten million, eight hundred ninety-seven thousand, two hundred twenty-one".