1321123140396 has 18 divisors (see below), whose sum is σ = 3339505716092. Its totient is φ = 440374380120.

The previous prime is 1321123140371. The next prime is 1321123140401. The reversal of 1321123140396 is 6930413211231.

1321123140396 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 123 + 140 + 396 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 36697865011 = 1321123140396 / (1 + 3 + 2 + 1 + 1 + 2 + 3 + 1 + 4 + 0 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1321123140396.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 18348932470 + ... + 18348932541.

Almost surely, 2^{1321123140396} is an apocalyptic number.

It is an amenable number.

1321123140396 is an abundant number, since it is smaller than the sum of its proper divisors (2018382575696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321123140396 is a wasteful number, since it uses less digits than its factorization.

1321123140396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36697865021 (or 36697865016 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 1321123140396 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-three million, one hundred forty thousand, three hundred ninety-six".