245422444121 has 4 divisors (see below), whose sum is σ = 245684368692. Its totient is φ = 245160519552.

The previous prime is 245422444093. The next prime is 245422444199. The reversal of 245422444121 is 121444224542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131424375625 + 113998068496 = 362525^2 + 337636^2 .

It is a cyclic number.

It is not a de Polignac number, because 245422444121 - 2²⁶ = 245355335257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245422444921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130960880 + ... + 130962753.

It is an arithmetic number, because the mean of its divisors is an integer number (61421092173).

Almost surely, 2^245422444121 is an apocalyptic number.

It is an amenable number.

245422444121 is a deficient number, since it is larger than the sum of its proper divisors (261924571).

245422444121 is an equidigital number, since it uses as much as digits as its factorization.

245422444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261924570.

The product of its digits is 81920, while the sum is 35.

Adding to 245422444121 its reverse (121444224542), we get a palindrome (366866668663).

The spelling of 245422444121 in words is "two hundred forty-five billion, four hundred twenty-two million, four hundred forty-four thousand, one hundred twenty-one".