245120445121 has 16 divisors (see below), whose sum is σ = 273323064960. Its totient is φ = 218460360960.

The previous prime is 245120445113. The next prime is 245120445139. The reversal of 245120445121 is 121544021542.

It is a cyclic number.

It is not a de Polignac number, because 245120445121 - 2³ = 245120445113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245120445421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546540 + ... + 888226.

It is an arithmetic number, because the mean of its divisors is an integer number (17082691560).

Almost surely, 2^245120445121 is an apocalyptic number.

It is an amenable number.

245120445121 is a deficient number, since it is larger than the sum of its proper divisors (28202619839).

245120445121 is a wasteful number, since it uses less digits than its factorization.

245120445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343944.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 245120445121 its reverse (121544021542), we get a palindrome (366664466663).

The spelling of 245120445121 in words is "two hundred forty-five billion, one hundred twenty million, four hundred forty-five thousand, one hundred twenty-one".