1222175131 has 2 divisors, whose sum is σ = 1222175132. Its totient is φ = 1222175130.

The previous prime is 1222175113. The next prime is 1222175137. The reversal of 1222175131 is 1315712221.

Together with previous prime (1222175113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222175131 - 2¹⁷ = 1222044059 is a prime.

It is a super-2 number, since 2×1222175131² = 2987424101669734322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222175096 and 1222175105.

It is not a weakly prime, because it can be changed into another prime (1222175137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611087565 + 611087566.

It is an arithmetic number, because the mean of its divisors is an integer number (611087566).

Almost surely, 2^1222175131 is an apocalyptic number.

1222175131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222175131 is an equidigital number, since it uses as much as digits as its factorization.

1222175131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 1222175131 is about 34959.6214367376. The cubic root of 1222175131 is about 1069.1643783030.

Adding to 1222175131 its reverse (1315712221), we get a palindrome (2537887352).

The spelling of 1222175131 in words is "one billion, two hundred twenty-two million, one hundred seventy-five thousand, one hundred thirty-one".