321120022100077 has 2 divisors, whose sum is σ = 321120022100078. Its totient is φ = 321120022100076.

The previous prime is 321120022100021. The next prime is 321120022100081. The reversal of 321120022100077 is 770001220021123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292938936780681 + 28181085319396 = 17115459^2 + 5308586^2 .

It is a cyclic number.

It is not a de Polignac number, because 321120022100077 - 2³⁹ = 320570266286189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321120022100677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160560011050038 + 160560011050039.

It is an arithmetic number, because the mean of its divisors is an integer number (160560011050039).

Almost surely, 2^{321120022100077} is an apocalyptic number.

It is an amenable number.

321120022100077 is a deficient number, since it is larger than the sum of its proper divisors (1).

321120022100077 is an equidigital number, since it uses as much as digits as its factorization.

321120022100077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The spelling of 321120022100077 in words is "three hundred twenty-one trillion, one hundred twenty billion, twenty-two million, one hundred thousand, seventy-seven".