1312211103223 has 4 divisors (see below), whose sum is σ = 1315241614288. Its totient is φ = 1309180592160.

The previous prime is 1312211103209. The next prime is 1312211103239. The reversal of 1312211103223 is 3223011122131.

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 1312211103223 - 2¹⁷ = 1312210972151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312211103194 and 1312211103203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312211103253) 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, 1515254883 + ... + 1515255748.

It is an arithmetic number, because the mean of its divisors is an integer number (328810403572).

Almost surely, 2^{1312211103223} is an apocalyptic number.

1312211103223 is a deficient number, since it is larger than the sum of its proper divisors (3030511065).

1312211103223 is an equidigital number, since it uses as much as digits as its factorization.

1312211103223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030511064.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1312211103223 its reverse (3223011122131), we get a palindrome (4535222225354).

The spelling of 1312211103223 in words is "one trillion, three hundred twelve billion, two hundred eleven million, one hundred three thousand, two hundred twenty-three".