1312300121 has 16 divisors (see below), whose sum is σ = 1504787328. Its totient is φ = 1132771200.

The previous prime is 1312300117. The next prime is 1312300139. The reversal of 1312300121 is 1210032131.

It is not a de Polignac number, because 1312300121 - 2² = 1312300117 is a prime.

It is a super-2 number, since 2×1312300121² = 3444263215153229282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312300096 and 1312300105.

It is not an unprimeable number, because it can be changed into a prime (1312300021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15731 + ... + 53591.

It is an arithmetic number, because the mean of its divisors is an integer number (94049208).

Almost surely, 2^1312300121 is an apocalyptic number.

1312300121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1312300121 is a deficient number, since it is larger than the sum of its proper divisors (192487207).

1312300121 is a wasteful number, since it uses less digits than its factorization.

1312300121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38032.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1312300121 is about 36225.6831681612. The cubic root of 1312300121 is about 1094.8242028547.

Adding to 1312300121 its reverse (1210032131), we get a palindrome (2522332252).

The spelling of 1312300121 in words is "one billion, three hundred twelve million, three hundred thousand, one hundred twenty-one".