1211212232 has 16 divisors (see below), whose sum is σ = 2273698140. Its totient is φ = 604892736.

The previous prime is 1211212229. The next prime is 1211212259. The reversal of 1211212232 is 2322121121.

It can be written as a sum of positive squares in 2 ways, for example, as 811452196 + 399760036 = 28486^2 + 19994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1211212232.

It is an unprimeable number.

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, 81923 + ... + 95570.

Almost surely, 2^1211212232 is an apocalyptic number.

It is an amenable number.

1211212232 is a deficient number, since it is larger than the sum of its proper divisors (1062485908).

1211212232 is a wasteful number, since it uses less digits than its factorization.

1211212232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178352 (or 178348 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 1211212232 is about 34802.4745097242. The cubic root of 1211212232 is about 1065.9579739541.

Adding to 1211212232 its reverse (2322121121), we get a palindrome (3533333353).

The spelling of 1211212232 in words is "one billion, two hundred eleven million, two hundred twelve thousand, two hundred thirty-two".