9158225221 has 8 divisors (see below), whose sum is σ = 9296512064. Its totient is φ = 9020833920.

The previous prime is 9158225119. The next prime is 9158225231. The reversal of 9158225221 is 1225228519.

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 9158225221 - 2²³ = 9149836613 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 (9158225231) 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, 203265 + ... + 244198.

It is an arithmetic number, because the mean of its divisors is an integer number (1162064008).

Almost surely, 2^9158225221 is an apocalyptic number.

It is an amenable number.

9158225221 is a deficient number, since it is larger than the sum of its proper divisors (138286843).

9158225221 is a wasteful number, since it uses less digits than its factorization.

9158225221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447771.

The product of its digits is 28800, while the sum is 37.

The square root of 9158225221 is about 95698.6166096459. The cubic root of 9158225221 is about 2092.2027721424.

The spelling of 9158225221 in words is "nine billion, one hundred fifty-eight million, two hundred twenty-five thousand, two hundred twenty-one".