100222987 has 2 divisors, whose sum is σ = 100222988. Its totient is φ = 100222986.

The previous prime is 100222963. The next prime is 100222999. The reversal of 100222987 is 789222001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100222987 - 2¹⁵ = 100190219 is a prime.

It is not a weakly prime, because it can be changed into another prime (100223987) 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, 50111493 + 50111494.

It is an arithmetic number, because the mean of its divisors is an integer number (50111494).

Almost surely, 2^100222987 is an apocalyptic number.

100222987 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222987 is an equidigital number, since it uses as much as digits as its factorization.

100222987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 100222987 is about 10011.1431415199. The cubic root of 100222987 is about 464.5036318964.

Adding to 100222987 its reverse (789222001), we get a palindrome (889444988).

The spelling of 100222987 in words is "one hundred million, two hundred twenty-two thousand, nine hundred eighty-seven".