2020201091 has 8 divisors (see below), whose sum is σ = 2045487600. Its totient is φ = 1995018400.

The previous prime is 2020201063. The next prime is 2020201097. The reversal of 2020201091 is 1901020202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020201091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020201097) 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, 13580 + ... + 64998.

It is an arithmetic number, because the mean of its divisors is an integer number (255685950).

Almost surely, 2^2020201091 is an apocalyptic number.

2020201091 is a deficient number, since it is larger than the sum of its proper divisors (25286509).

2020201091 is a wasteful number, since it uses less digits than its factorization.

2020201091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51909.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2020201091 is about 44946.6471608284. The cubic root of 2020201091 is about 1264.1488107509.

Adding to 2020201091 its reverse (1901020202), we get a palindrome (3921221293).

Subtracting from 2020201091 its reverse (1901020202), we obtain a square (119180889 = 10917²).

The spelling of 2020201091 in words is "two billion, twenty million, two hundred one thousand, ninety-one".