202128220097 has 2 divisors, whose sum is σ = 202128220098. Its totient is φ = 202128220096.

The previous prime is 202128220039. The next prime is 202128220103. The reversal of 202128220097 is 790022821202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147211109761 + 54917110336 = 383681^2 + 234344^2 .

It is a cyclic number.

It is not a de Polignac number, because 202128220097 - 2¹⁸ = 202127957953 is a prime.

It is not a weakly prime, because it can be changed into another prime (202128220037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101064110048 + 101064110049.

It is an arithmetic number, because the mean of its divisors is an integer number (101064110049).

Almost surely, 2^202128220097 is an apocalyptic number.

It is an amenable number.

202128220097 is a deficient number, since it is larger than the sum of its proper divisors (1).

202128220097 is an equidigital number, since it uses as much as digits as its factorization.

202128220097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 202128220097 in words is "two hundred two billion, one hundred twenty-eight million, two hundred twenty thousand, ninety-seven".