1212021232 has 10 divisors (see below), whose sum is σ = 2348291168. Its totient is φ = 606010608.

The previous prime is 1212021227. The next prime is 1212021233. The reversal of 1212021232 is 2321202121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 75751327 = 1212021232 / (1 + 2 + 1 + 2 + 0 + 2 + 1 + 2 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212021233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37875648 + ... + 37875679.

Almost surely, 2^1212021232 is an apocalyptic number.

It is an amenable number.

1212021232 is a deficient number, since it is larger than the sum of its proper divisors (1136269936).

1212021232 is an equidigital number, since it uses as much as digits as its factorization.

1212021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75751335 (or 75751329 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1212021232 is about 34814.0953063554. The cubic root of 1212021232 is about 1066.1952481086.

Adding to 1212021232 its reverse (2321202121), we get a palindrome (3533223353).

The spelling of 1212021232 in words is "one billion, two hundred twelve million, twenty-one thousand, two hundred thirty-two".