2021223331 has 2 divisors, whose sum is σ = 2021223332. Its totient is φ = 2021223330.

The previous prime is 2021223329. The next prime is 2021223361. The reversal of 2021223331 is 1333221202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021223331 - 2¹ = 2021223329 is a prime.

It is a super-2 number, since 2×2021223331² = 8170687507557471122, which contains 22 as substring.

Together with 2021223329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021223299 and 2021223308.

It is not a weakly prime, because it can be changed into another prime (2021223301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010611665 + 1010611666.

It is an arithmetic number, because the mean of its divisors is an integer number (1010611666).

Almost surely, 2^2021223331 is an apocalyptic number.

2021223331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021223331 is an equidigital number, since it uses as much as digits as its factorization.

2021223331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2021223331 is about 44958.0174273733. The cubic root of 2021223331 is about 1264.3619983689.

Adding to 2021223331 its reverse (1333221202), we get a palindrome (3354444533).

The spelling of 2021223331 in words is "two billion, twenty-one million, two hundred twenty-three thousand, three hundred thirty-one".