2221443131 has 2 divisors, whose sum is σ = 2221443132. Its totient is φ = 2221443130.

The previous prime is 2221443073. The next prime is 2221443149. The reversal of 2221443131 is 1313441222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221443131 - 2³⁰ = 1147701307 is a prime.

It is a super-2 number, since 2×2221443131² = 9869619168534166322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221443097 and 2221443106.

It is not a weakly prime, because it can be changed into another prime (2221440131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110721565 + 1110721566.

It is an arithmetic number, because the mean of its divisors is an integer number (1110721566).

Almost surely, 2^2221443131 is an apocalyptic number.

2221443131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221443131 is an equidigital number, since it uses as much as digits as its factorization.

2221443131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 2221443131 is about 47132.1878444020. The cubic root of 2221443131 is about 1304.8033606134.

Adding to 2221443131 its reverse (1313441222), we get a palindrome (3534884353).

The spelling of 2221443131 in words is "two billion, two hundred twenty-one million, four hundred forty-three thousand, one hundred thirty-one".