1211344012 has 12 divisors (see below), whose sum is σ = 2231423320. Its totient is φ = 573794496.

The previous prime is 1211343997. The next prime is 1211344021. The reversal of 1211344012 is 2104431121.

It is a super-2 number, since 2×1211344012² = 2934708630816512288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7969293 + ... + 7969444.

Almost surely, 2^1211344012 is an apocalyptic number.

It is an amenable number.

1211344012 is a deficient number, since it is larger than the sum of its proper divisors (1020079308).

1211344012 is a wasteful number, since it uses less digits than its factorization.

1211344012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15938760 (or 15938758 counting only the distinct ones).

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

The square root of 1211344012 is about 34804.3677144119. The cubic root of 1211344012 is about 1065.9966313267.

Adding to 1211344012 its reverse (2104431121), we get a palindrome (3315775133).

The spelling of 1211344012 in words is "one billion, two hundred eleven million, three hundred forty-four thousand, twelve".