1005222211 has 16 divisors (see below), whose sum is σ = 1173952000. Its totient is φ = 860383944.

The previous prime is 1005222203. The next prime is 1005222241. The reversal of 1005222211 is 1122225001.

It is a happy number.

It is not a de Polignac number, because 1005222211 - 2³ = 1005222203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005222241) 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, 301210 + ... + 304528.

It is an arithmetic number, because the mean of its divisors is an integer number (73372000).

Almost surely, 2^1005222211 is an apocalyptic number.

1005222211 is a deficient number, since it is larger than the sum of its proper divisors (168729789).

1005222211 is an frugal number, since it uses more digits than its factorization.

1005222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223 (or 4209 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1005222211 is about 31705.2394881351. The cubic root of 1005222211 is about 1001.7377155954.

Adding to 1005222211 its reverse (1122225001), we get a palindrome (2127447212).

The spelling of 1005222211 in words is "one billion, five million, two hundred twenty-two thousand, two hundred eleven".