2021020993 has 8 divisors (see below), whose sum is σ = 2094689960. Its totient is φ = 1948354560.

The previous prime is 2021020973. The next prime is 2021021021. The reversal of 2021020993 is 3990201202.

It can be written as a sum of positive squares in 4 ways, for example, as 1474022449 + 546998544 = 38393^2 + 23388^2 .

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 2021020993 - 2¹⁷ = 2020889921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021020943) 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, 246528 + ... + 254593.

It is an arithmetic number, because the mean of its divisors is an integer number (261836245).

Almost surely, 2^2021020993 is an apocalyptic number.

It is an amenable number.

2021020993 is a deficient number, since it is larger than the sum of its proper divisors (73668967).

2021020993 is a wasteful number, since it uses less digits than its factorization.

2021020993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501267.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2021020993 is about 44955.7670716450. The cubic root of 2021020993 is about 1264.3198065914.

The spelling of 2021020993 in words is "two billion, twenty-one million, twenty thousand, nine hundred ninety-three".