245121103 has 2 divisors, whose sum is σ = 245121104. Its totient is φ = 245121102.

The previous prime is 245121101. The next prime is 245121133. The reversal of 245121103 is 301121542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245121103 - 2¹ = 245121101 is a prime.

Together with 245121101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122560551 + 122560552.

It is an arithmetic number, because the mean of its divisors is an integer number (122560552).

Almost surely, 2^245121103 is an apocalyptic number.

245121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

245121103 is an equidigital number, since it uses as much as digits as its factorization.

245121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 245121103 is about 15656.3438580021. The cubic root of 245121103 is about 625.8355570134.

Adding to 245121103 its reverse (301121542), we get a palindrome (546242645).

The spelling of 245121103 in words is "two hundred forty-five million, one hundred twenty-one thousand, one hundred three".