2212987409 has 2 divisors, whose sum is σ = 2212987410. Its totient is φ = 2212987408.

The previous prime is 2212987379. The next prime is 2212987453. The reversal of 2212987409 is 9047892122.

It is an a-pointer prime, because the next prime (2212987453) can be obtained adding 2212987409 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1742227600 + 470759809 = 41740^2 + 21697^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212987409 - 2²⁴ = 2196210193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212987409.

It is not a weakly prime, because it can be changed into another prime (2212987459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106493704 + 1106493705.

It is an arithmetic number, because the mean of its divisors is an integer number (1106493705).

Almost surely, 2^2212987409 is an apocalyptic number.

It is an amenable number.

2212987409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212987409 is an equidigital number, since it uses as much as digits as its factorization.

2212987409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2212987409 is about 47042.4001194667. The cubic root of 2212987409 is about 1303.1457170183.

The spelling of 2212987409 in words is "two billion, two hundred twelve million, nine hundred eighty-seven thousand, four hundred nine".