1312210120211 has 4 divisors (see below), whose sum is σ = 1312215750912. Its totient is φ = 1312204489512.

The previous prime is 1312210120201. The next prime is 1312210120213. The reversal of 1312210120211 is 1120210122131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312210120211 - 2⁶ = 1312210120147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312210120211.

It is not an unprimeable number, because it can be changed into a prime (1312210120213) by changing a digit.

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, 2449976 + ... + 2937141.

It is an arithmetic number, because the mean of its divisors is an integer number (328053937728).

Almost surely, 2^{1312210120211} is an apocalyptic number.

1312210120211 is a deficient number, since it is larger than the sum of its proper divisors (5630701).

1312210120211 is an equidigital number, since it uses as much as digits as its factorization.

1312210120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630700.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1312210120211 its reverse (1120210122131), we get a palindrome (2432420242342).

The spelling of 1312210120211 in words is "one trillion, three hundred twelve billion, two hundred ten million, one hundred twenty thousand, two hundred eleven".