2020100221991 has 8 divisors (see below), whose sum is σ = 2139106358880. Its totient is φ = 1901113719808.

The previous prime is 2020100221981. The next prime is 2020100222081. The reversal of 2020100221991 is 1991220010202.

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

It is a cyclic number.

It is not a de Polignac number, because 2020100221991 - 2²² = 2020096027687 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 (2020100221901) 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 7 ways as a sum of consecutive naturals, for example, 4696586 + ... + 5108631.

It is an arithmetic number, because the mean of its divisors is an integer number (267388294860).

Almost surely, 2^{2020100221991} is an apocalyptic number.

2020100221991 is a deficient number, since it is larger than the sum of its proper divisors (119006136889).

2020100221991 is a wasteful number, since it uses less digits than its factorization.

2020100221991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9817353.

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

The spelling of 2020100221991 in words is "two trillion, twenty billion, one hundred million, two hundred twenty-one thousand, nine hundred ninety-one".