121312320333277 has 2 divisors, whose sum is σ = 121312320333278. Its totient is φ = 121312320333276.

The previous prime is 121312320333247. The next prime is 121312320333331. The reversal of 121312320333277 is 772333023213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120930907865881 + 381412467396 = 10996859^2 + 617586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121312320333277 is a prime.

It is a super-2 number, since 2×121312320333277² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121312320333247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656160166638 + 60656160166639.

It is an arithmetic number, because the mean of its divisors is an integer number (60656160166639).

Almost surely, 2^{121312320333277} is an apocalyptic number.

It is an amenable number.

121312320333277 is a deficient number, since it is larger than the sum of its proper divisors (1).

121312320333277 is an equidigital number, since it uses as much as digits as its factorization.

121312320333277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 40.

Adding to 121312320333277 its reverse (772333023213121), we get a palindrome (893645343546398).

The spelling of 121312320333277 in words is "one hundred twenty-one trillion, three hundred twelve billion, three hundred twenty million, three hundred thirty-three thousand, two hundred seventy-seven".