1211232200 has 48 divisors (see below), whose sum is σ = 2820556080. Its totient is φ = 483728960.

The previous prime is 1211232193. The next prime is 1211232221. The reversal of 1211232200 is 22321121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132167 + ... + 141033.

It is an arithmetic number, because the mean of its divisors is an integer number (58761585).

Almost surely, 2^1211232200 is an apocalyptic number.

1211232200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211232200 is an abundant number, since it is smaller than the sum of its proper divisors (1609323880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211232200 is a wasteful number, since it uses less digits than its factorization.

1211232200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566 (or 9557 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1211232200 is about 34802.7613846947. The cubic root of 1211232200 is about 1065.9638317032.

Adding to 1211232200 its reverse (22321121), we get a palindrome (1233553321).

It can be divided in two parts, 121 and 1232200, that added together give a palindrome (1232321).

The spelling of 1211232200 in words is "one billion, two hundred eleven million, two hundred thirty-two thousand, two hundred".