1212204211 has 2 divisors, whose sum is σ = 1212204212. Its totient is φ = 1212204210.

The previous prime is 1212204197. The next prime is 1212204221. The reversal of 1212204211 is 1124022121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212204211 - 2⁵ = 1212204179 is a prime.

It is a super-2 number, since 2×1212204211² = 2938878098332265042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212204221) 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 as a sum of consecutive naturals, namely, 606102105 + 606102106.

It is an arithmetic number, because the mean of its divisors is an integer number (606102106).

Almost surely, 2^1212204211 is an apocalyptic number.

1212204211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212204211 is an equidigital number, since it uses as much as digits as its factorization.

1212204211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1212204211 is about 34816.7231513823. The cubic root of 1212204211 is about 1066.2488999529.

Adding to 1212204211 its reverse (1124022121), we get a palindrome (2336226332).

The spelling of 1212204211 in words is "one billion, two hundred twelve million, two hundred four thousand, two hundred eleven".