1312212301 has 4 divisors (see below), whose sum is σ = 1325204604. Its totient is φ = 1299220000.

The previous prime is 1312212283. The next prime is 1312212311. The reversal of 1312212301 is 1032122131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1032122131 = 101 ⋅10219031.

It can be written as a sum of positive squares in 2 ways, for example, as 659154276 + 653058025 = 25674^2 + 25555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312212301 - 2²³ = 1303823693 is a prime.

It is a super-2 number, since 2×1312212301² = 3443802245791429202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312212311) 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, 6496000 + ... + 6496201.

It is an arithmetic number, because the mean of its divisors is an integer number (331301151).

Almost surely, 2^1312212301 is an apocalyptic number.

It is an amenable number.

1312212301 is a deficient number, since it is larger than the sum of its proper divisors (12992303).

1312212301 is a wasteful number, since it uses less digits than its factorization.

1312212301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12992302.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1312212301 is about 36224.4710244332. The cubic root of 1312212301 is about 1094.7997801878.

Adding to 1312212301 its reverse (1032122131), we get a palindrome (2344334432).

The spelling of 1312212301 in words is "one billion, three hundred twelve million, two hundred twelve thousand, three hundred one".