1021244099 has 2 divisors, whose sum is σ = 1021244100. Its totient is φ = 1021244098.

The previous prime is 1021244093. The next prime is 1021244123. The reversal of 1021244099 is 9904421201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021244099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021244093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510622049 + 510622050.

It is an arithmetic number, because the mean of its divisors is an integer number (510622050).

Almost surely, 2^1021244099 is an apocalyptic number.

1021244099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021244099 is an equidigital number, since it uses as much as digits as its factorization.

1021244099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1021244099 is about 31956.9100352334. The cubic root of 1021244099 is about 1007.0318041647.

The spelling of 1021244099 in words is "one billion, twenty-one million, two hundred forty-four thousand, ninety-nine".