1211233130 has 32 divisors (see below), whose sum is σ = 2284184448. Its totient is φ = 461560000.

The previous prime is 1211233123. The next prime is 1211233139. The reversal of 1211233130 is 313321121.

It is a junction number, because it is equal to n+sod(n) for n = 1211233099 and 1211233108.

It is not an unprimeable number, because it can be changed into a prime (1211233139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47240 + ... + 68220.

It is an arithmetic number, because the mean of its divisors is an integer number (71380764).

Almost surely, 2^1211233130 is an apocalyptic number.

1211233130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211233130 is a deficient number, since it is larger than the sum of its proper divisors (1072951318).

1211233130 is a wasteful number, since it uses less digits than its factorization.

1211233130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21262.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1211233130 is about 34802.7747457010. The cubic root of 1211233130 is about 1065.9641045234.

Adding to 1211233130 its reverse (313321121), we get a palindrome (1524554251).

The spelling of 1211233130 in words is "one billion, two hundred eleven million, two hundred thirty-three thousand, one hundred thirty".