1312122213 has 32 divisors (see below), whose sum is σ = 2024494080. Its totient is φ = 838978560.

The previous prime is 1312122211. The next prime is 1312122233. The reversal of 1312122213 is 3122212131.

It is not a de Polignac number, because 1312122213 - 2¹ = 1312122211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312122211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87645 + ... + 101517.

It is an arithmetic number, because the mean of its divisors is an integer number (63265440).

Almost surely, 2^1312122213 is an apocalyptic number.

It is an amenable number.

1312122213 is a deficient number, since it is larger than the sum of its proper divisors (712371867).

1312122213 is a wasteful number, since it uses less digits than its factorization.

1312122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14026 (or 14020 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1312122213 is about 36223.2275342770. The cubic root of 1312122213 is about 1094.7747256597.

Adding to 1312122213 its reverse (3122212131), we get a palindrome (4434334344).

The spelling of 1312122213 in words is "one billion, three hundred twelve million, one hundred twenty-two thousand, two hundred thirteen".