2001020221199 has 4 divisors (see below), whose sum is σ = 2001024920664. Its totient is φ = 2001015521736.

The previous prime is 2001020221169. The next prime is 2001020221201. The reversal of 2001020221199 is 9911220201002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001020221199 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 (2001020221169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639472 + ... + 2586485.

It is an arithmetic number, because the mean of its divisors is an integer number (500256230166).

Almost surely, 2^{2001020221199} is an apocalyptic number.

2001020221199 is a deficient number, since it is larger than the sum of its proper divisors (4699465).

2001020221199 is an equidigital number, since it uses as much as digits as its factorization.

2001020221199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699464.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 2001020221199 in words is "two trillion, one billion, twenty million, two hundred twenty-one thousand, one hundred ninety-nine".