2266021 has 2 divisors, whose sum is σ = 2266022. Its totient is φ = 2266020.

The previous prime is 2266003. The next prime is 2266027. The reversal of 2266021 is 1206622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 148996 = 1455^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266021 - 2¹⁷ = 2134949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2266021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2266027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133010 + 1133011.

It is an arithmetic number, because the mean of its divisors is an integer number (1133011).

2^2266021 is an apocalyptic number.

It is an amenable number.

2266021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2266021 is an equidigital number, since it uses as much as digits as its factorization.

2266021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2266021 is about 1505.3308606416. The cubic root of 2266021 is about 131.3473484890.

The spelling of 2266021 in words is "two million, two hundred sixty-six thousand, twenty-one".