1012121312 has 24 divisors (see below), whose sum is σ = 2035012896. Its totient is φ = 495292672.

The previous prime is 1012121309. The next prime is 1012121321. The reversal of 1012121312 is 2131212101.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 334973 + ... + 337980.

It is an arithmetic number, because the mean of its divisors is an integer number (84792204).

Almost surely, 2^1012121312 is an apocalyptic number.

It is an amenable number.

1012121312 is an abundant number, since it is smaller than the sum of its proper divisors (1022891584).

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

1012121312 is an equidigital number, since it uses as much as digits as its factorization.

1012121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673010 (or 673002 counting only the distinct ones).

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

The square root of 1012121312 is about 31813.8540890600. The cubic root of 1012121312 is about 1004.0242212534.

Adding to 1012121312 its reverse (2131212101), we get a palindrome (3143333413).

The spelling of 1012121312 in words is "one billion, twelve million, one hundred twenty-one thousand, three hundred twelve".