312203021021012 has 18 divisors (see below), whose sum is σ = 600539282171514. Its totient is φ = 141910464100240.

The previous prime is 312203021020999. The next prime is 312203021021029. The reversal of 312203021021012 is 210120120302213.

It can be written as a sum of positive squares in only one way, i.e., 262381812825616 + 49821208195396 = 16198204^2 + 7058414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322523781563 + ... + 322523782530.

It is an arithmetic number, because the mean of its divisors is an integer number (33363293453973).

Almost surely, 2^{312203021021012} is an apocalyptic number.

It is an amenable number.

312203021021012 is a deficient number, since it is larger than the sum of its proper divisors (288336261150502).

312203021021012 is a wasteful number, since it uses less digits than its factorization.

312203021021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645047564119 (or 645047564106 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 312203021021012 its reverse (210120120302213), we get a palindrome (522323141323225).

The spelling of 312203021021012 in words is "three hundred twelve trillion, two hundred three billion, twenty-one million, twenty-one thousand, twelve".