1012111229 has 4 divisors (see below), whose sum is σ = 1012901376. Its totient is φ = 1011321084.

The previous prime is 1012111189. The next prime is 1012111231. The reversal of 1012111229 is 9221112101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9221112101 = 239 ⋅38582059.

It is a cyclic number.

It is not a de Polignac number, because 1012111229 - 2⁸ = 1012110973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012111229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393149 + ... + 395714.

It is an arithmetic number, because the mean of its divisors is an integer number (253225344).

Almost surely, 2^1012111229 is an apocalyptic number.

It is an amenable number.

1012111229 is a deficient number, since it is larger than the sum of its proper divisors (790147).

1012111229 is an equidigital number, since it uses as much as digits as its factorization.

1012111229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790146.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1012111229 is about 31813.6956199685. The cubic root of 1012111229 is about 1004.0208871307.

The spelling of 1012111229 in words is "one billion, twelve million, one hundred eleven thousand, two hundred twenty-nine".