388528288121 has 2 divisors, whose sum is σ = 388528288122. Its totient is φ = 388528288120.

The previous prime is 388528288117. The next prime is 388528288177. The reversal of 388528288121 is 121882825883.

It is a happy number.

It is an a-pointer prime, because the next prime (388528288177) can be obtained adding 388528288121 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252341456896 + 136186831225 = 502336^2 + 369035^2 .

It is a cyclic number.

It is not a de Polignac number, because 388528288121 - 2² = 388528288117 is a prime.

It is not a weakly prime, because it can be changed into another prime (388528281121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194264144060 + 194264144061.

It is an arithmetic number, because the mean of its divisors is an integer number (194264144061).

Almost surely, 2^388528288121 is an apocalyptic number.

It is an amenable number.

388528288121 is a deficient number, since it is larger than the sum of its proper divisors (1).

388528288121 is an equidigital number, since it uses as much as digits as its factorization.

388528288121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3932160, while the sum is 56.

The spelling of 388528288121 in words is "three hundred eighty-eight billion, five hundred twenty-eight million, two hundred eighty-eight thousand, one hundred twenty-one".