1321200302131 has 4 divisors (see below), whose sum is σ = 1378643793552. Its totient is φ = 1263756810712.

The previous prime is 1321200302119. The next prime is 1321200302141. The reversal of 1321200302131 is 1312030021231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321200302131 - 2⁵ = 1321200302099 is a prime.

It is a super-2 number, since 2×1321200302131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321200302099 and 1321200302108.

It is not an unprimeable number, because it can be changed into a prime (1321200302141) 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, 28721745676 + ... + 28721745721.

It is an arithmetic number, because the mean of its divisors is an integer number (344660948388).

Almost surely, 2^{1321200302131} is an apocalyptic number.

1321200302131 is a deficient number, since it is larger than the sum of its proper divisors (57443491421).

1321200302131 is an equidigital number, since it uses as much as digits as its factorization.

1321200302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57443491420.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1321200302131 its reverse (1312030021231), we get a palindrome (2633230323362).

The spelling of 1321200302131 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred two thousand, one hundred thirty-one".