1211230112 has 12 divisors (see below), whose sum is σ = 2384609346. Its totient is φ = 605615040.

The previous prime is 1211230079. The next prime is 1211230121. The reversal of 1211230112 is 2110321121.

It can be written as a sum of positive squares in only one way, i.e., 883040656 + 328189456 = 29716^2 + 18116^2 .

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 as a sum of consecutive naturals, namely, 18925439 + ... + 18925502.

Almost surely, 2^1211230112 is an apocalyptic number.

It is an amenable number.

1211230112 is a deficient number, since it is larger than the sum of its proper divisors (1173379234).

1211230112 is an equidigital number, since it uses as much as digits as its factorization.

1211230112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37850951 (or 37850943 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1211230112 is about 34802.7313870621. The cubic root of 1211230112 is about 1065.9632191771.

Adding to 1211230112 its reverse (2110321121), we get a palindrome (3321551233).

It can be divided in two parts, 12112 and 30112, that added together give a palindrome (42224).

The spelling of 1211230112 in words is "one billion, two hundred eleven million, two hundred thirty thousand, one hundred twelve".