1211000012 has 12 divisors (see below), whose sum is σ = 2119511520. Its totient is φ = 605425296.

The previous prime is 1210999987. The next prime is 1211000023. The reversal of 1211000012 is 2100001121.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 34814 + ... + 60282.

It is an arithmetic number, because the mean of its divisors is an integer number (176625960).

Almost surely, 2^1211000012 is an apocalyptic number.

It is an amenable number.

1211000012 is a deficient number, since it is larger than the sum of its proper divisors (908511508).

1211000012 is a wasteful number, since it uses less digits than its factorization.

1211000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37360 (or 37358 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1211000012 is about 34799.4254550273. The cubic root of 1211000012 is about 1065.8957137907.

Adding to 1211000012 its reverse (2100001121), we get a palindrome (3311001133).

The spelling of 1211000012 in words is "one billion, two hundred eleven million, twelve", and thus it is an aban number.