1312226211 has 8 divisors (see below), whose sum is σ = 1749808144. Its totient is φ = 874730880.

The previous prime is 1312226207. The next prime is 1312226213. The reversal of 1312226211 is 1126222131.

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

It is not a de Polignac number, because 1312226211 - 2² = 1312226207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312226213) 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 7 ways as a sum of consecutive naturals, for example, 34551 + ... + 61791.

It is an arithmetic number, because the mean of its divisors is an integer number (218726018).

Almost surely, 2^1312226211 is an apocalyptic number.

1312226211 is a deficient number, since it is larger than the sum of its proper divisors (437581933).

1312226211 is a wasteful number, since it uses less digits than its factorization.

1312226211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43301.

The product of its digits is 288, while the sum is 21.

The square root of 1312226211 is about 36224.6630212070. The cubic root of 1312226211 is about 1094.8036486195.

Adding to 1312226211 its reverse (1126222131), we get a palindrome (2438448342).

The spelling of 1312226211 in words is "one billion, three hundred twelve million, two hundred twenty-six thousand, two hundred eleven".