1312252101 has 12 divisors (see below), whose sum is σ = 1946704812. Its totient is φ = 851190336.

The previous prime is 1312252091. The next prime is 1312252111. The reversal of 1312252101 is 1012522131.

1312252101 is a `hidden beast` number, since 1 + 312 + 252 + 101 = 666.

It is an interprime number because it is at equal distance from previous prime (1312252091) and next prime (1312252111).

It can be written as a sum of positive squares in 2 ways, for example, as 1038515076 + 273737025 = 32226^2 + 16545^2 .

It is not a de Polignac number, because 1312252101 - 2⁶ = 1312252037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312252111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1970016 + ... + 1970681.

It is an arithmetic number, because the mean of its divisors is an integer number (162225401).

Almost surely, 2^1312252101 is an apocalyptic number.

It is an amenable number.

1312252101 is a deficient number, since it is larger than the sum of its proper divisors (634452711).

1312252101 is a wasteful number, since it uses less digits than its factorization.

1312252101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940740 (or 3940737 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1312252101 is about 36225.0203726651. The cubic root of 1312252101 is about 1094.8108486688.

Adding to 1312252101 its reverse (1012522131), we get a palindrome (2324774232).

The spelling of 1312252101 in words is "one billion, three hundred twelve million, two hundred fifty-two thousand, one hundred one".