1112213129 has 2 divisors, whose sum is σ = 1112213130. Its totient is φ = 1112213128.

The previous prime is 1112212993. The next prime is 1112213147. The reversal of 1112213129 is 9213122111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104033529 + 8179600 = 33227^2 + 2860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112213129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112213329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556106564 + 556106565.

It is an arithmetic number, because the mean of its divisors is an integer number (556106565).

Almost surely, 2^1112213129 is an apocalyptic number.

It is an amenable number.

1112213129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112213129 is an equidigital number, since it uses as much as digits as its factorization.

1112213129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 23.

The square root of 1112213129 is about 33349.8595049514. The cubic root of 1112213129 is about 1036.0864780875.

The spelling of 1112213129 in words is "one billion, one hundred twelve million, two hundred thirteen thousand, one hundred twenty-nine".