1005216222 has 32 divisors (see below), whose sum is σ = 2186233632. Its totient is φ = 306837504.

The previous prime is 1005216221. The next prime is 1005216257. The reversal of 1005216222 is 2226125001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005216221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129403 + ... + 136950.

It is an arithmetic number, because the mean of its divisors is an integer number (68319801).

Almost surely, 2^1005216222 is an apocalyptic number.

1005216222 is an abundant number, since it is smaller than the sum of its proper divisors (1181017410).

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

1005216222 is a wasteful number, since it uses less digits than its factorization.

1005216222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266412.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1005216222 is about 31705.1450398827. The cubic root of 1005216222 is about 1001.7357261782.

The spelling of 1005216222 in words is "one billion, five million, two hundred sixteen thousand, two hundred twenty-two".