1211020301312 has 44 divisors (see below), whose sum is σ = 2421001900416. Its totient is φ = 605474150400.

The previous prime is 1211020301273. The next prime is 1211020301339. The reversal of 1211020301312 is 2131030201121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28498193 + ... + 28540655.

It is an arithmetic number, because the mean of its divisors is an integer number (55022770464).

Almost surely, 2^{1211020301312} is an apocalyptic number.

It is an amenable number.

1211020301312 is a deficient number, since it is larger than the sum of its proper divisors (1209981599104).

1211020301312 is an equidigital number, since it uses as much as digits as its factorization.

1211020301312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70334 (or 70316 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1211020301312 its reverse (2131030201121), we get a palindrome (3342050502433).

The spelling of 1211020301312 in words is "one trillion, two hundred eleven billion, twenty million, three hundred one thousand, three hundred twelve".