121312132373 has 2 divisors, whose sum is σ = 121312132374. Its totient is φ = 121312132372.

The previous prime is 121312132369. The next prime is 121312132441. The reversal of 121312132373 is 373231213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71204652964 + 50107479409 = 266842^2 + 223847^2 .

It is a cyclic number.

It is not a de Polignac number, because 121312132373 - 2² = 121312132369 is a prime.

It is a super-2 number, since 2×121312132373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121312132573) by changing a digit.

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 as a sum of consecutive naturals, namely, 60656066186 + 60656066187.

It is an arithmetic number, because the mean of its divisors is an integer number (60656066187).

Almost surely, 2^121312132373 is an apocalyptic number.

It is an amenable number.

121312132373 is a deficient number, since it is larger than the sum of its proper divisors (1).

121312132373 is an equidigital number, since it uses as much as digits as its factorization.

121312132373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

Adding to 121312132373 its reverse (373231213121), we get a palindrome (494543345494).

The spelling of 121312132373 in words is "one hundred twenty-one billion, three hundred twelve million, one hundred thirty-two thousand, three hundred seventy-three".