1229911012 has 24 divisors (see below), whose sum is σ = 2348902080. Its totient is φ = 558838560.

The previous prime is 1229910973. The next prime is 1229911031. The reversal of 1229911012 is 2101199221.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 215289 + ... + 220927.

It is an arithmetic number, because the mean of its divisors is an integer number (97870920).

Almost surely, 2^1229911012 is an apocalyptic number.

It is an amenable number.

1229911012 is a deficient number, since it is larger than the sum of its proper divisors (1118991068).

1229911012 is a wasteful number, since it uses less digits than its factorization.

1229911012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10611 (or 10609 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1229911012 is about 35070.0871398974. The cubic root of 1229911012 is about 1071.4154302016.

The spelling of 1229911012 in words is "one billion, two hundred twenty-nine million, nine hundred eleven thousand, twelve".