1011220229 has 2 divisors, whose sum is σ = 1011220230. Its totient is φ = 1011220228.

The previous prime is 1011220193. The next prime is 1011220271. The reversal of 1011220229 is 9220221101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008062500 + 3157729 = 31750^2 + 1777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011220229 - 2¹⁶ = 1011154693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011220229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011280229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505610114 + 505610115.

It is an arithmetic number, because the mean of its divisors is an integer number (505610115).

Almost surely, 2^1011220229 is an apocalyptic number.

It is an amenable number.

1011220229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011220229 is an equidigital number, since it uses as much as digits as its factorization.

1011220229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1011220229 is about 31799.6891337007. The cubic root of 1011220229 is about 1003.7261747102.

The spelling of 1011220229 in words is "one billion, eleven million, two hundred twenty thousand, two hundred twenty-nine".