2066205021 has 8 divisors (see below), whose sum is σ = 2849938080. Its totient is φ = 1329970992.

The previous prime is 2066205013. The next prime is 2066205047. The reversal of 2066205021 is 1205026602.

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

It is not a de Polignac number, because 2066205021 - 2³ = 2066205013 is a prime.

It is a super-2 number, since 2×2066205021² = 8538406377611220882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2066204982 and 2066205000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066205061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11874655 + ... + 11874828.

It is an arithmetic number, because the mean of its divisors is an integer number (356242260).

Almost surely, 2^2066205021 is an apocalyptic number.

It is an amenable number.

2066205021 is a deficient number, since it is larger than the sum of its proper divisors (783733059).

2066205021 is a wasteful number, since it uses less digits than its factorization.

2066205021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23749515.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2066205021 is about 45455.5279476545. The cubic root of 2066205021 is about 1273.6725943698.

The spelling of 2066205021 in words is "two billion, sixty-six million, two hundred five thousand, twenty-one".