1212224211 has 28 divisors (see below), whose sum is σ = 1982745720. Its totient is φ = 734676480.

The previous prime is 1212224183. The next prime is 1212224227. The reversal of 1212224211 is 1124222121.

1212224211 is a `hidden beast` number, since 1 + 21 + 222 + 421 + 1 = 666.

It is not a de Polignac number, because 1212224211 - 2⁵ = 1212224179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212224231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 67566 + ... + 83603.

Almost surely, 2^1212224211 is an apocalyptic number.

1212224211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212224211 is a deficient number, since it is larger than the sum of its proper divisors (770521509).

1212224211 is an equidigital number, since it uses as much as digits as its factorization.

1212224211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151198 (or 151183 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 1212224211 is about 34817.0103684966. The cubic root of 1212224211 is about 1066.2547638881.

Adding to 1212224211 its reverse (1124222121), we get a palindrome (2336446332).

The spelling of 1212224211 in words is "one billion, two hundred twelve million, two hundred twenty-four thousand, two hundred eleven".