1001220199999 has 2 divisors, whose sum is σ = 1001220200000. Its totient is φ = 1001220199998.

The previous prime is 1001220199997. The next prime is 1001220200021. The reversal of 1001220199999 is 9999910221001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001220199999 - 2¹ = 1001220199997 is a prime.

Together with 1001220199997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001220199997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500610099999 + 500610100000.

It is an arithmetic number, because the mean of its divisors is an integer number (500610100000).

Almost surely, 2^{1001220199999} is an apocalyptic number.

1001220199999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001220199999 is an equidigital number, since it uses as much as digits as its factorization.

1001220199999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 52.

The spelling of 1001220199999 in words is "one trillion, one billion, two hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety-nine".