120210000257 has 2 divisors, whose sum is σ = 120210000258. Its totient is φ = 120210000256.

The previous prime is 120210000193. The next prime is 120210000263. The reversal of 120210000257 is 752000012021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84331579201 + 35878421056 = 290399^2 + 189416^2 .

It is an emirp because it is prime and its reverse (752000012021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120210000257 - 2⁶ = 120210000193 is a prime.

It is not a weakly prime, because it can be changed into another prime (120210800257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105000128 + 60105000129.

It is an arithmetic number, because the mean of its divisors is an integer number (60105000129).

Almost surely, 2^120210000257 is an apocalyptic number.

It is an amenable number.

120210000257 is a deficient number, since it is larger than the sum of its proper divisors (1).

120210000257 is an equidigital number, since it uses as much as digits as its factorization.

120210000257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

Adding to 120210000257 its reverse (752000012021), we get a palindrome (872210012278).

The spelling of 120210000257 in words is "one hundred twenty billion, two hundred ten million, two hundred fifty-seven", and thus it is an aban number.