1222163531 has 2 divisors, whose sum is σ = 1222163532. Its totient is φ = 1222163530.

The previous prime is 1222163519. The next prime is 1222163533. The reversal of 1222163531 is 1353612221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222163531 is a prime.

It is a super-2 number, since 2×1222163531² = 2987367393012775922, which contains 22 as substring.

Together with 1222163533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222163531.

It is not a weakly prime, because it can be changed into another prime (1222163533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611081765 + 611081766.

It is an arithmetic number, because the mean of its divisors is an integer number (611081766).

Almost surely, 2^1222163531 is an apocalyptic number.

1222163531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222163531 is an equidigital number, since it uses as much as digits as its factorization.

1222163531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 1222163531 is about 34959.4555306572. The cubic root of 1222163531 is about 1069.1609957146.

Adding to 1222163531 its reverse (1353612221), we get a palindrome (2575775752).

The spelling of 1222163531 in words is "one billion, two hundred twenty-two million, one hundred sixty-three thousand, five hundred thirty-one".