388943322101 has 2 divisors, whose sum is σ = 388943322102. Its totient is φ = 388943322100.

The previous prime is 388943322017. The next prime is 388943322113. The reversal of 388943322101 is 101223349883.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380350959076 + 8592363025 = 616726^2 + 92695^2 .

It is a cyclic number.

It is not a de Polignac number, because 388943322101 - 2¹⁰ = 388943321077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388943322121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194471661050 + 194471661051.

It is an arithmetic number, because the mean of its divisors is an integer number (194471661051).

Almost surely, 2^388943322101 is an apocalyptic number.

It is an amenable number.

388943322101 is a deficient number, since it is larger than the sum of its proper divisors (1).

388943322101 is an equidigital number, since it uses as much as digits as its factorization.

388943322101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 388943322101 in words is "three hundred eighty-eight billion, nine hundred forty-three million, three hundred twenty-two thousand, one hundred one".