9002211220 has 24 divisors (see below), whose sum is σ = 18976535424. Its totient is φ = 3587190816.

The previous prime is 9002211203. The next prime is 9002211269. The reversal of 9002211220 is 221122009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850464 + ... + 860983.

It is an arithmetic number, because the mean of its divisors is an integer number (790688976).

Almost surely, 2^9002211220 is an apocalyptic number.

It is an amenable number.

9002211220 is an abundant number, since it is smaller than the sum of its proper divisors (9974324204).

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

9002211220 is a wasteful number, since it uses less digits than its factorization.

9002211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711719 (or 1711717 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 9002211220 is about 94879.9832419884. The cubic root of 9002211220 is about 2080.2541618043.

Adding to 9002211220 its reverse (221122009), we get a palindrome (9223333229).

The spelling of 9002211220 in words is "nine billion, two million, two hundred eleven thousand, two hundred twenty".