333140021 has 2 divisors, whose sum is σ = 333140022. Its totient is φ = 333140020.

The previous prime is 333139999. The next prime is 333140039. The reversal of 333140021 is 120041333.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171976996 + 161163025 = 13114^2 + 12695^2 .

It is a cyclic number.

It is not a de Polignac number, because 333140021 - 2¹⁸ = 332877877 is a prime.

It is a super-2 number, since 2×333140021² = 221964547183760882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (333140321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166570010 + 166570011.

It is an arithmetic number, because the mean of its divisors is an integer number (166570011).

Almost surely, 2^333140021 is an apocalyptic number.

It is an amenable number.

333140021 is a deficient number, since it is larger than the sum of its proper divisors (1).

333140021 is an equidigital number, since it uses as much as digits as its factorization.

333140021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 333140021 is about 18252.1237394447. The cubic root of 333140021 is about 693.2272131458.

Adding to 333140021 its reverse (120041333), we get a palindrome (453181354).

The spelling of 333140021 in words is "three hundred thirty-three million, one hundred forty thousand, twenty-one".