1312231232211 has 48 divisors (see below), whose sum is σ = 1872600188160. Its totient is φ = 817175692800.

The previous prime is 1312231232141. The next prime is 1312231232237. The reversal of 1312231232211 is 1122321322131.

It is not a de Polignac number, because 1312231232211 - 2²² = 1312227037907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312231232311) 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 47 ways as a sum of consecutive naturals, for example, 171104685 + ... + 171112353.

It is an arithmetic number, because the mean of its divisors is an integer number (39012503920).

Almost surely, 2^{1312231232211} is an apocalyptic number.

1312231232211 is a deficient number, since it is larger than the sum of its proper divisors (560368955949).

1312231232211 is a wasteful number, since it uses less digits than its factorization.

1312231232211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9164 (or 9147 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 1312231232211 its reverse (1122321322131), we get a palindrome (2434552554342).

The spelling of 1312231232211 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred eleven".