2221031 has 2 divisors, whose sum is σ = 2221032. Its totient is φ = 2221030.

The previous prime is 2221019. The next prime is 2221061. The reversal of 2221031 is 1301222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221031 - 2¹⁰ = 2220007 is a prime.

It is a super-2 number, since 2×2221031² = 9865957405922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221061) 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, 1110515 + 1110516.

It is an arithmetic number, because the mean of its divisors is an integer number (1110516).

2^2221031 is an apocalyptic number.

2221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221031 is an equidigital number, since it uses as much as digits as its factorization.

2221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2221031 is about 1490.3123833613. The cubic root of 2221031 is about 130.4722664846.

Adding to 2221031 its reverse (1301222), we get a palindrome (3522253).

The spelling of 2221031 in words is "two million, two hundred twenty-one thousand, thirty-one".