4208241220987 has 2 divisors, whose sum is σ = 4208241220988. Its totient is φ = 4208241220986.

The previous prime is 4208241220933. The next prime is 4208241221033. The reversal of 4208241220987 is 7890221428024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4208241220987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4208241220987.

It is not a weakly prime, because it can be changed into another prime (4208241220487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2104120610493 + 2104120610494.

It is an arithmetic number, because the mean of its divisors is an integer number (2104120610494).

Almost surely, 2^{4208241220987} is an apocalyptic number.

4208241220987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4208241220987 is an equidigital number, since it uses as much as digits as its factorization.

4208241220987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 4208241220987 in words is "four trillion, two hundred eight billion, two hundred forty-one million, two hundred twenty thousand, nine hundred eighty-seven".