1312000133121 has 16 divisors (see below), whose sum is σ = 1961536051200. Its totient is φ = 866642287824.

The previous prime is 1312000133057. The next prime is 1312000133137. The reversal of 1312000133121 is 1213310002131.

1312000133121 is a `hidden beast` number, since 1 + 312 + 0 + 0 + 0 + 1 + 331 + 21 = 666.

It is not a de Polignac number, because 1312000133121 - 2⁶ = 1312000133057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1312000133094 and 1312000133103.

It is not an unprimeable number, because it can be changed into a prime (1312000143121) 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, 222898881 + ... + 222904766.

It is an arithmetic number, because the mean of its divisors is an integer number (122596003200).

Almost surely, 2^{1312000133121} is an apocalyptic number.

It is an amenable number.

1312000133121 is a deficient number, since it is larger than the sum of its proper divisors (649535918079).

1312000133121 is a wasteful number, since it uses less digits than its factorization.

1312000133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445803765 (or 445803759 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1312000133121 its reverse (1213310002131), we get a palindrome (2525310135252).

The spelling of 1312000133121 in words is "one trillion, three hundred twelve billion, one hundred thirty-three thousand, one hundred twenty-one".