2021329066 has 4 divisors (see below), whose sum is σ = 3031993602. Its totient is φ = 1010664532.

The previous prime is 2021329061. The next prime is 2021329081. The reversal of 2021329066 is 6609231202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1675183041 + 346146025 = 40929^2 + 18605^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2021329061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505332265 + ... + 505332268.

Almost surely, 2^2021329066 is an apocalyptic number.

2021329066 is a deficient number, since it is larger than the sum of its proper divisors (1010664536).

2021329066 is a wasteful number, since it uses less digits than its factorization.

2021329066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010664535.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2021329066 is about 44959.1933424077. The cubic root of 2021329066 is about 1264.3840452457.

The spelling of 2021329066 in words is "two billion, twenty-one million, three hundred twenty-nine thousand, sixty-six".