121312132307 has 4 divisors (see below), whose sum is σ = 121312835496. Its totient is φ = 121311429120.

The previous prime is 121312132289. The next prime is 121312132327. The reversal of 121312132307 is 703231213121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121312132307 - 2³⁶ = 52592655571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121312132327) 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, 103763 + ... + 503379.

It is an arithmetic number, because the mean of its divisors is an integer number (30328208874).

Almost surely, 2^121312132307 is an apocalyptic number.

121312132307 is a deficient number, since it is larger than the sum of its proper divisors (703189).

121312132307 is an equidigital number, since it uses as much as digits as its factorization.

121312132307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703188.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 121312132307 its reverse (703231213121), we get a palindrome (824543345428).

The spelling of 121312132307 in words is "one hundred twenty-one billion, three hundred twelve million, one hundred thirty-two thousand, three hundred seven".