1222715737 has 2 divisors, whose sum is σ = 1222715738. Its totient is φ = 1222715736.

The previous prime is 1222715713. The next prime is 1222715771. The reversal of 1222715737 is 7375172221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153009936 + 69705801 = 33956^2 + 8349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222715737 - 2¹⁵ = 1222682969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222715696 and 1222715705.

It is not a weakly prime, because it can be changed into another prime (1222712737) 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, 611357868 + 611357869.

It is an arithmetic number, because the mean of its divisors is an integer number (611357869).

Almost surely, 2^1222715737 is an apocalyptic number.

It is an amenable number.

1222715737 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222715737 is an equidigital number, since it uses as much as digits as its factorization.

1222715737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41160, while the sum is 37.

The square root of 1222715737 is about 34967.3524448163. The cubic root of 1222715737 is about 1069.3219965969.

Adding to 1222715737 its reverse (7375172221), we get a palindrome (8597887958).

The spelling of 1222715737 in words is "one billion, two hundred twenty-two million, seven hundred fifteen thousand, seven hundred thirty-seven".