1005213211 has 4 divisors (see below), whose sum is σ = 1024179552. Its totient is φ = 986246872.

The previous prime is 1005213197. The next prime is 1005213217. The reversal of 1005213211 is 1123125001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1123125001 = 6263 ⋅179327.

It is a cyclic number.

It is not a de Polignac number, because 1005213211 - 2¹⁷ = 1005082139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005213217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9483091 + ... + 9483196.

It is an arithmetic number, because the mean of its divisors is an integer number (256044888).

Almost surely, 2^1005213211 is an apocalyptic number.

1005213211 is a deficient number, since it is larger than the sum of its proper divisors (18966341).

1005213211 is an equidigital number, since it uses as much as digits as its factorization.

1005213211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18966340.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1005213211 is about 31705.0975554405. The cubic root of 1005213211 is about 1001.7347259857.

Adding to 1005213211 its reverse (1123125001), we get a palindrome (2128338212).

The spelling of 1005213211 in words is "one billion, five million, two hundred thirteen thousand, two hundred eleven".