1021229018899 has 2 divisors, whose sum is σ = 1021229018900. Its totient is φ = 1021229018898.

The previous prime is 1021229018869. The next prime is 1021229018993. The reversal of 1021229018899 is 9988109221201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021229018899 - 2⁵ = 1021229018867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021229018869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510614509449 + 510614509450.

It is an arithmetic number, because the mean of its divisors is an integer number (510614509450).

Almost surely, 2^{1021229018899} is an apocalyptic number.

1021229018899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021229018899 is an equidigital number, since it uses as much as digits as its factorization.

1021229018899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 52.

The spelling of 1021229018899 in words is "one trillion, twenty-one billion, two hundred twenty-nine million, eighteen thousand, eight hundred ninety-nine".