9221185020 has 48 divisors (see below), whose sum is σ = 25917534720. Its totient is φ = 2449628736.

The previous prime is 9221185007. The next prime is 9221185063. The reversal of 9221185020 is 205811229.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 276400 + ... + 307959.

It is an arithmetic number, because the mean of its divisors is an integer number (539948640).

Almost surely, 2^9221185020 is an apocalyptic number.

It is an amenable number.

9221185020 is an abundant number, since it is smaller than the sum of its proper divisors (16696349700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9221185020 is a wasteful number, since it uses less digits than its factorization.

9221185020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584634 (or 584632 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 9221185020 is about 96027.0015151988. The cubic root of 9221185020 is about 2096.9862302102.

Adding to 9221185020 its reverse (205811229), we get a palindrome (9426996249).

The spelling of 9221185020 in words is "nine billion, two hundred twenty-one million, one hundred eighty-five thousand, twenty".