201212849 has 2 divisors, whose sum is σ = 201212850. Its totient is φ = 201212848.

The previous prime is 201212839. The next prime is 201212861. The reversal of 201212849 is 948212102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 78446449 = 11080^2 + 8857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201212849 is a prime.

It is a super-2 number, since 2×201212849² = 80973221205393602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201212819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606424 + 100606425.

It is an arithmetic number, because the mean of its divisors is an integer number (100606425).

Almost surely, 2^201212849 is an apocalyptic number.

It is an amenable number.

201212849 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212849 is an equidigital number, since it uses as much as digits as its factorization.

201212849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 201212849 is about 14184.9514979784. The cubic root of 201212849 is about 585.9832967473.

The spelling of 201212849 in words is "two hundred one million, two hundred twelve thousand, eight hundred forty-nine".