335861021 has 2 divisors, whose sum is σ = 335861022. Its totient is φ = 335861020.

The previous prime is 335860997. The next prime is 335861023. The reversal of 335861021 is 120168533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243796996 + 92064025 = 15614^2 + 9595^2 .

It is an emirp because it is prime and its reverse (120168533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 335861021 - 2⁶ = 335860957 is a prime.

It is a super-2 number, since 2×335861021² = 225605250854324882, which contains 22 as substring.

Together with 335861023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (335861023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167930510 + 167930511.

It is an arithmetic number, because the mean of its divisors is an integer number (167930511).

Almost surely, 2^335861021 is an apocalyptic number.

It is an amenable number.

335861021 is a deficient number, since it is larger than the sum of its proper divisors (1).

335861021 is an equidigital number, since it uses as much as digits as its factorization.

335861021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 335861021 is about 18326.5114247093. The cubic root of 335861021 is about 695.1094636341.

The spelling of 335861021 in words is "three hundred thirty-five million, eight hundred sixty-one thousand, twenty-one".