9857222211 has 16 divisors (see below), whose sum is σ = 13841104640. Its totient is φ = 6222731040.

The previous prime is 9857222203. The next prime is 9857222213. The reversal of 9857222211 is 1122227589.

It is not a de Polignac number, because 9857222211 - 2³ = 9857222203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9857222211.

It is not an unprimeable number, because it can be changed into a prime (9857222213) 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, 87666 + ... + 165528.

It is an arithmetic number, because the mean of its divisors is an integer number (865069040).

Almost surely, 2^9857222211 is an apocalyptic number.

9857222211 is a deficient number, since it is larger than the sum of its proper divisors (3983882429).

9857222211 is a wasteful number, since it uses less digits than its factorization.

9857222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80106.

The product of its digits is 40320, while the sum is 39.

The square root of 9857222211 is about 99283.5445126734. The cubic root of 9857222211 is about 2144.1319860404.

The spelling of 9857222211 in words is "nine billion, eight hundred fifty-seven million, two hundred twenty-two thousand, two hundred eleven".