1312011121213 has 8 divisors (see below), whose sum is σ = 1412950289408. Its totient is φ = 1211074129584.

The previous prime is 1312011121207. The next prime is 1312011121237. The reversal of 1312011121213 is 3121211102131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312011121213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312011127213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837820 + ... + 1823722.

It is an arithmetic number, because the mean of its divisors is an integer number (176618786176).

Almost surely, 2^{1312011121213} is an apocalyptic number.

1312011121213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1312011121213 is a deficient number, since it is larger than the sum of its proper divisors (100939168195).

1312011121213 is a wasteful number, since it uses less digits than its factorization.

1312011121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088283.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1312011121213 its reverse (3121211102131), we get a palindrome (4433222223344).

The spelling of 1312011121213 in words is "one trillion, three hundred twelve billion, eleven million, one hundred twenty-one thousand, two hundred thirteen".