111120120110257 has 2 divisors, whose sum is σ = 111120120110258. Its totient is φ = 111120120110256.

The previous prime is 111120120110221. The next prime is 111120120110269. The reversal of 111120120110257 is 752011021021111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95953955680881 + 15166164429376 = 9795609^2 + 3894376^2 .

It is an emirp because it is prime and its reverse (752011021021111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111120120110257 is a prime.

It is not a weakly prime, because it can be changed into another prime (111120120110287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560060055128 + 55560060055129.

It is an arithmetic number, because the mean of its divisors is an integer number (55560060055129).

Almost surely, 2^{111120120110257} is an apocalyptic number.

It is an amenable number.

111120120110257 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120120110257 is an equidigital number, since it uses as much as digits as its factorization.

111120120110257 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 25.

Adding to 111120120110257 its reverse (752011021021111), we get a palindrome (863131141131368).

The spelling of 111120120110257 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twenty million, one hundred ten thousand, two hundred fifty-seven".