2021812799 has 2 divisors, whose sum is σ = 2021812800. Its totient is φ = 2021812798.

The previous prime is 2021812729. The next prime is 2021812813. The reversal of 2021812799 is 9972181202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021812799 - 2¹⁶ = 2021747263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021812729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010906399 + 1010906400.

It is an arithmetic number, because the mean of its divisors is an integer number (1010906400).

Almost surely, 2^2021812799 is an apocalyptic number.

2021812799 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021812799 is an equidigital number, since it uses as much as digits as its factorization.

2021812799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 2021812799 is about 44964.5727100792. The cubic root of 2021812799 is about 1264.4848989387.

The spelling of 2021812799 in words is "two billion, twenty-one million, eight hundred twelve thousand, seven hundred ninety-nine".