335222021 has 2 divisors, whose sum is σ = 335222022. Its totient is φ = 335222020.

The previous prime is 335221877. The next prime is 335222029. The reversal of 335222021 is 120222533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335073025 + 148996 = 18305^2 + 386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-335222021 is a prime.

It is a super-2 number, since 2×335222021² = 224747606726648882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 335221984 and 335222002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (335222029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167611010 + 167611011.

It is an arithmetic number, because the mean of its divisors is an integer number (167611011).

Almost surely, 2^335222021 is an apocalyptic number.

It is an amenable number.

335222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

335222021 is an equidigital number, since it uses as much as digits as its factorization.

335222021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 335222021 is about 18309.0693646619. The cubic root of 335222021 is about 694.6683516768.

Adding to 335222021 its reverse (120222533), we get a palindrome (455444554).

The spelling of 335222021 in words is "three hundred thirty-five million, two hundred twenty-two thousand, twenty-one".