2221130531 has 2 divisors, whose sum is σ = 2221130532. Its totient is φ = 2221130530.

The previous prime is 2221130497. The next prime is 2221130567. The reversal of 2221130531 is 1350311222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221130531 - 2³⁰ = 1147388707 is a prime.

It is a super-2 number, since 2×2221130531² = 9866841671480683922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2221150531) 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, 1110565265 + 1110565266.

It is an arithmetic number, because the mean of its divisors is an integer number (1110565266).

Almost surely, 2^2221130531 is an apocalyptic number.

2221130531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221130531 is an equidigital number, since it uses as much as digits as its factorization.

2221130531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2221130531 is about 47128.8715226664. The cubic root of 2221130531 is about 1304.7421540553.

Adding to 2221130531 its reverse (1350311222), we get a palindrome (3571441753).

The spelling of 2221130531 in words is "two billion, two hundred twenty-one million, one hundred thirty thousand, five hundred thirty-one".