1312022113211 has 4 divisors (see below), whose sum is σ = 1312048694424. Its totient is φ = 1311995532000.

The previous prime is 1312022113159. The next prime is 1312022113231. The reversal of 1312022113211 is 1123112202131.

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 1312022113211 - 2²² = 1312017918907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312022113231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13216430 + ... + 13315331.

It is an arithmetic number, because the mean of its divisors is an integer number (328012173606).

Almost surely, 2^{1312022113211} is an apocalyptic number.

1312022113211 is a deficient number, since it is larger than the sum of its proper divisors (26581213).

1312022113211 is an equidigital number, since it uses as much as digits as its factorization.

1312022113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26581212.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1312022113211 its reverse (1123112202131), we get a palindrome (2435134315342).

The spelling of 1312022113211 in words is "one trillion, three hundred twelve billion, twenty-two million, one hundred thirteen thousand, two hundred eleven".