1212101312 has 14 divisors (see below), whose sum is σ = 2405263668. Its totient is φ = 606050624.

The previous prime is 1212101291. The next prime is 1212101321. The reversal of 1212101312 is 2131012121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9469478 + ... + 9469605.

Almost surely, 2^1212101312 is an apocalyptic number.

It is an amenable number.

1212101312 is a deficient number, since it is larger than the sum of its proper divisors (1193162356).

1212101312 is an equidigital number, since it uses as much as digits as its factorization.

1212101312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18939095 (or 18939085 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1212101312 is about 34815.2453962341. The cubic root of 1212101312 is about 1066.2187292800.

Adding to 1212101312 its reverse (2131012121), we get a palindrome (3343113433).

The spelling of 1212101312 in words is "one billion, two hundred twelve million, one hundred one thousand, three hundred twelve".