2228081 has 2 divisors, whose sum is σ = 2228082. Its totient is φ = 2228080.

The previous prime is 2228077. The next prime is 2228089. The reversal of 2228081 is 1808222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 1018081 = 1100^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 2228081 - 2² = 2228077 is a prime.

It is a super-2 number, since 2×2228081² = 9928689885122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2228089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114040 + 1114041.

It is an arithmetic number, because the mean of its divisors is an integer number (1114041).

2^2228081 is an apocalyptic number.

It is an amenable number.

2228081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2228081 is an equidigital number, since it uses as much as digits as its factorization.

2228081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2228081 is about 1492.6757852930. The cubic root of 2228081 is about 130.6101690998.

The spelling of 2228081 in words is "two million, two hundred twenty-eight thousand, eighty-one".