1220129363 has 2 divisors, whose sum is σ = 1220129364. Its totient is φ = 1220129362.

The previous prime is 1220129333. The next prime is 1220129371. The reversal of 1220129363 is 3639210221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220129363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220129303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610064681 + 610064682.

It is an arithmetic number, because the mean of its divisors is an integer number (610064682).

Almost surely, 2^1220129363 is an apocalyptic number.

1220129363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220129363 is an equidigital number, since it uses as much as digits as its factorization.

1220129363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1220129363 is about 34930.3501700169. The cubic root of 1220129363 is about 1068.5674960850.

Adding to 1220129363 its reverse (3639210221), we get a palindrome (4859339584).

The spelling of 1220129363 in words is "one billion, two hundred twenty million, one hundred twenty-nine thousand, three hundred sixty-three".