1212212132 has 24 divisors (see below), whose sum is σ = 2247227136. Its totient is φ = 570181248.

The previous prime is 1212212123. The next prime is 1212212147. The reversal of 1212212132 is 2312122121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1212212132.

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 7 ways as a sum of consecutive naturals, for example, 257633 + ... + 262295.

It is an arithmetic number, because the mean of its divisors is an integer number (93634464).

Almost surely, 2^1212212132 is an apocalyptic number.

It is an amenable number.

1212212132 is a deficient number, since it is larger than the sum of its proper divisors (1035015004).

1212212132 is a wasteful number, since it uses less digits than its factorization.

1212212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507 (or 8505 counting only the distinct ones).

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

The square root of 1212212132 is about 34816.8369040038. The cubic root of 1212212132 is about 1066.2512223722.

Adding to 1212212132 its reverse (2312122121), we get a palindrome (3524334253).

The spelling of 1212212132 in words is "one billion, two hundred twelve million, two hundred twelve thousand, one hundred thirty-two".