1211443012 has 24 divisors (see below), whose sum is σ = 2284111872. Its totient is φ = 558880800.

The previous prime is 1211442971. The next prime is 1211443019. The reversal of 1211443012 is 2103441121.

It is a super-3 number, since 3×1211443012³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211443019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171837 + ... + 178747.

It is an arithmetic number, because the mean of its divisors is an integer number (95171328).

Almost surely, 2^1211443012 is an apocalyptic number.

It is an amenable number.

1211443012 is a deficient number, since it is larger than the sum of its proper divisors (1072668860).

1211443012 is a wasteful number, since it uses less digits than its factorization.

1211443012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10299 (or 10297 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1211443012 is about 34805.7899206440. The cubic root of 1211443012 is about 1066.0256709143.

Adding to 1211443012 its reverse (2103441121), we get a palindrome (3314884133).

The spelling of 1211443012 in words is "one billion, two hundred eleven million, four hundred forty-three thousand, twelve".