2021131199 has 12 divisors (see below), whose sum is σ = 2076179400. Its totient is φ = 1966975344.

The previous prime is 2021131159. The next prime is 2021131247. The reversal of 2021131199 is 9911311202.

It is a de Polignac number, because none of the positive numbers 2^k-2021131199 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 (2021131109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 624317 + ... + 627545.

It is an arithmetic number, because the mean of its divisors is an integer number (173014950).

Almost surely, 2^2021131199 is an apocalyptic number.

2021131199 is a deficient number, since it is larger than the sum of its proper divisors (55048201).

2021131199 is an equidigital number, since it uses as much as digits as its factorization.

2021131199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 2021131199 is about 44956.9927708694. The cubic root of 2021131199 is about 1264.3427872361.

The spelling of 2021131199 in words is "two billion, twenty-one million, one hundred thirty-one thousand, one hundred ninety-nine".