245212411121 has 4 divisors (see below), whose sum is σ = 250429696512. Its totient is φ = 239995125732.

The previous prime is 245212411091. The next prime is 245212411153. The reversal of 245212411121 is 121114212542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245212411121 - 2¹⁰ = 245212410097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245212411181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2608642625 + ... + 2608642718.

It is an arithmetic number, because the mean of its divisors is an integer number (62607424128).

Almost surely, 2^245212411121 is an apocalyptic number.

It is an amenable number.

245212411121 is a deficient number, since it is larger than the sum of its proper divisors (5217285391).

245212411121 is an equidigital number, since it uses as much as digits as its factorization.

245212411121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217285390.

The product of its digits is 1280, while the sum is 26.

Adding to 245212411121 its reverse (121114212542), we get a palindrome (366326623663).

The spelling of 245212411121 in words is "two hundred forty-five billion, two hundred twelve million, four hundred eleven thousand, one hundred twenty-one".