2001201212312 has 16 divisors (see below), whose sum is σ = 3758051745360. Its totient is φ = 999054080224.

The previous prime is 2001201212291. The next prime is 2001201212323. The reversal of 2001201212312 is 2132121021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193310243 + ... + 193320594.

It is an arithmetic number, because the mean of its divisors is an integer number (234878234085).

Almost surely, 2^{2001201212312} is an apocalyptic number.

It is an amenable number.

2001201212312 is a deficient number, since it is larger than the sum of its proper divisors (1756850533048).

2001201212312 is a wasteful number, since it uses less digits than its factorization.

2001201212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386631490 (or 386631486 counting only the distinct ones).

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

Adding to 2001201212312 its reverse (2132121021002), we get a palindrome (4133322233314).

The spelling of 2001201212312 in words is "two trillion, one billion, two hundred one million, two hundred twelve thousand, three hundred twelve".