2027021 has 2 divisors, whose sum is σ = 2027022. Its totient is φ = 2027020.

The previous prime is 2026987. The next prime is 2027023. The reversal of 2027021 is 1207202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1990921 + 36100 = 1411^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 2027021 - 2⁶ = 2026957 is a prime.

Together with 2027023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2026987 and 2027005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2027023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013510 + 1013511.

It is an arithmetic number, because the mean of its divisors is an integer number (1013511).

2^2027021 is an apocalyptic number.

It is an amenable number.

2027021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2027021 is an equidigital number, since it uses as much as digits as its factorization.

2027021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 2027021 is about 1423.7348770048. The cubic root of 2027021 is about 126.5569741326.

The spelling of 2027021 in words is "two million, twenty-seven thousand, twenty-one".