1020201019999 has 8 divisors (see below), whose sum is σ = 1166663310368. Its totient is φ = 873918551520.

The previous prime is 1020201019979. The next prime is 1020201020011. The reversal of 1020201019999 is 9999101020201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020201019999 - 2¹¹ = 1020201017951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020201019979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44943312 + ... + 44966005.

It is an arithmetic number, because the mean of its divisors is an integer number (145832913796).

Almost surely, 2^{1020201019999} is an apocalyptic number.

1020201019999 is a deficient number, since it is larger than the sum of its proper divisors (146462290369).

1020201019999 is an equidigital number, since it uses as much as digits as its factorization.

1020201019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89910945.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 1020201019999 in words is "one trillion, twenty billion, two hundred one million, nineteen thousand, nine hundred ninety-nine".