1011212329 has 2 divisors, whose sum is σ = 1011212330. Its totient is φ = 1011212328.

The previous prime is 1011212327. The next prime is 1011212333. The reversal of 1011212329 is 9232121101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959760400 + 51451929 = 30980^2 + 7173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011212329 - 2¹ = 1011212327 is a prime.

Together with 1011212327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1011212327) 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, 505606164 + 505606165.

It is an arithmetic number, because the mean of its divisors is an integer number (505606165).

Almost surely, 2^1011212329 is an apocalyptic number.

It is an amenable number.

1011212329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011212329 is an equidigital number, since it uses as much as digits as its factorization.

1011212329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1011212329 is about 31799.5649184073. The cubic root of 1011212329 is about 1003.7235608854.

The spelling of 1011212329 in words is "one billion, eleven million, two hundred twelve thousand, three hundred twenty-nine".