245121240220213 has 16 divisors (see below), whose sum is σ = 295586472384000. Its totient is φ = 198570769393392.

The previous prime is 245121240220169. The next prime is 245121240220249. The reversal of 245121240220213 is 312022042121542.

It is a de Polignac number, because none of the positive numbers 2^k-245121240220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245121240220513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2199248383 + ... + 2199359836.

It is an arithmetic number, because the mean of its divisors is an integer number (18474154524000).

Almost surely, 2^{245121240220213} is an apocalyptic number.

It is an amenable number.

245121240220213 is a deficient number, since it is larger than the sum of its proper divisors (50465232163787).

245121240220213 is a wasteful number, since it uses less digits than its factorization.

245121240220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398608664.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 245121240220213 its reverse (312022042121542), we get a palindrome (557143282341755).

The spelling of 245121240220213 in words is "two hundred forty-five trillion, one hundred twenty-one billion, two hundred forty million, two hundred twenty thousand, two hundred thirteen".