1021144099 has 2 divisors, whose sum is σ = 1021144100. Its totient is φ = 1021144098.

The previous prime is 1021144097. The next prime is 1021144109. The reversal of 1021144099 is 9904411201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9904411201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021144099 - 2¹ = 1021144097 is a prime.

Together with 1021144097, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1021144099.

It is not a weakly prime, because it can be changed into another prime (1021144097) 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, 510572049 + 510572050.

It is an arithmetic number, because the mean of its divisors is an integer number (510572050).

Almost surely, 2^1021144099 is an apocalyptic number.

1021144099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021144099 is an equidigital number, since it uses as much as digits as its factorization.

1021144099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1021144099 is about 31955.3453900908. The cubic root of 1021144099 is about 1006.9989336467.

The spelling of 1021144099 in words is "one billion, twenty-one million, one hundred forty-four thousand, ninety-nine".