2211481 has 2 divisors, whose sum is σ = 2211482. Its totient is φ = 2211480.

The previous prime is 2211439. The next prime is 2211493. The reversal of 2211481 is 1841122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 968256 = 1115^2 + 984^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211481 - 2¹⁹ = 1687193 is a prime.

It is a super-2 number, since 2×2211481² = 9781296426722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2211281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105740 + 1105741.

It is an arithmetic number, because the mean of its divisors is an integer number (1105741).

2^2211481 is an apocalyptic number.

It is an amenable number.

2211481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211481 is an equidigital number, since it uses as much as digits as its factorization.

2211481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128, while the sum is 19.

The square root of 2211481 is about 1487.1049055127. The cubic root of 2211481 is about 130.2849960548.

The spelling of 2211481 in words is "two million, two hundred eleven thousand, four hundred eighty-one".