1266012229 has 2 divisors, whose sum is σ = 1266012230. Its totient is φ = 1266012228.

The previous prime is 1266012221. The next prime is 1266012247. The reversal of 1266012229 is 9222106621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224860004 + 41152225 = 34998^2 + 6415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266012229 - 2³ = 1266012221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1266012229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266012221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633006114 + 633006115.

It is an arithmetic number, because the mean of its divisors is an integer number (633006115).

Almost surely, 2^1266012229 is an apocalyptic number.

It is an amenable number.

1266012229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266012229 is an equidigital number, since it uses as much as digits as its factorization.

1266012229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1266012229 is about 35581.0655967468. The cubic root of 1266012229 is about 1081.7974836883.

The spelling of 1266012229 in words is "one billion, two hundred sixty-six million, twelve thousand, two hundred twenty-nine".