1226120263 has 2 divisors, whose sum is σ = 1226120264. Its totient is φ = 1226120262.

The previous prime is 1226120219. The next prime is 1226120267. The reversal of 1226120263 is 3620216221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226120263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226120267) 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, 613060131 + 613060132.

It is an arithmetic number, because the mean of its divisors is an integer number (613060132).

Almost surely, 2^1226120263 is an apocalyptic number.

1226120263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226120263 is an equidigital number, since it uses as much as digits as its factorization.

1226120263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1226120263 is about 35016.0000999543. Note that the first 4 decimals coincide. The cubic root of 1226120263 is about 1070.3135491845.

Adding to 1226120263 its reverse (3620216221), we get a palindrome (4846336484).

The spelling of 1226120263 in words is "one billion, two hundred twenty-six million, one hundred twenty thousand, two hundred sixty-three".