245024245512221 has 4 divisors (see below), whose sum is σ = 280027709156832. Its totient is φ = 210020781867612.

The previous prime is 245024245512191. The next prime is 245024245512247. The reversal of 245024245512221 is 122215542420542.

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 245024245512221 - 2¹⁴ = 245024245495837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245024245112221) 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, 17501731822295 + ... + 17501731822308.

It is an arithmetic number, because the mean of its divisors is an integer number (70006927289208).

Almost surely, 2^{245024245512221} is an apocalyptic number.

It is an amenable number.

245024245512221 is a deficient number, since it is larger than the sum of its proper divisors (35003463644611).

245024245512221 is an equidigital number, since it uses as much as digits as its factorization.

245024245512221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35003463644610.

The product of its (nonzero) digits is 512000, while the sum is 41.

Adding to 245024245512221 its reverse (122215542420542), we get a palindrome (367239787932763).

The spelling of 245024245512221 in words is "two hundred forty-five trillion, twenty-four billion, two hundred forty-five million, five hundred twelve thousand, two hundred twenty-one".