1211242124 has 12 divisors (see below), whose sum is σ = 2129721048. Its totient is φ = 602750400.

The previous prime is 1211242111. The next prime is 1211242127. The reversal of 1211242124 is 4212421121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1211242096 and 1211242105.

It is not an unprimeable number, because it can be changed into a prime (1211242127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716717 + ... + 718404.

It is an arithmetic number, because the mean of its divisors is an integer number (177476754).

Almost surely, 2^1211242124 is an apocalyptic number.

It is an amenable number.

1211242124 is a deficient number, since it is larger than the sum of its proper divisors (918478924).

1211242124 is a wasteful number, since it uses less digits than its factorization.

1211242124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435336 (or 1435334 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 1211242124 is about 34802.9039592963. The cubic root of 1211242124 is about 1065.9667429523.

Adding to 1211242124 its reverse (4212421121), we get a palindrome (5423663245).

The spelling of 1211242124 in words is "one billion, two hundred eleven million, two hundred forty-two thousand, one hundred twenty-four".