202030201100257 has 2 divisors, whose sum is σ = 202030201100258. Its totient is φ = 202030201100256.

The previous prime is 202030201100251. The next prime is 202030201100267. The reversal of 202030201100257 is 752001102030202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196723093691601 + 5307107408656 = 14025801^2 + 2303716^2 .

It is a cyclic number.

It is not a de Polignac number, because 202030201100257 - 2³ = 202030201100249 is a prime.

It is a super-2 number, since 2×202030201100257² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202030201100251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101015100550128 + 101015100550129.

It is an arithmetic number, because the mean of its divisors is an integer number (101015100550129).

Almost surely, 2^{202030201100257} is an apocalyptic number.

It is an amenable number.

202030201100257 is a deficient number, since it is larger than the sum of its proper divisors (1).

202030201100257 is an equidigital number, since it uses as much as digits as its factorization.

202030201100257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

Adding to 202030201100257 its reverse (752001102030202), we get a palindrome (954031303130459).

The spelling of 202030201100257 in words is "two hundred two trillion, thirty billion, two hundred one million, one hundred thousand, two hundred fifty-seven".