245012332057221 has 64 divisors (see below), whose sum is σ = 362509253922816. Its totient is φ = 146535382579200.

The previous prime is 245012332057063. The next prime is 245012332057247. The reversal of 245012332057221 is 122750233210542.

It is not a de Polignac number, because 245012332057221 - 2¹⁷ = 245012331926149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245012332057221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245012332057291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53933086 + ... + 58299248.

It is an arithmetic number, because the mean of its divisors is an integer number (5664207092544).

Almost surely, 2^{245012332057221} is an apocalyptic number.

It is an amenable number.

245012332057221 is a deficient number, since it is larger than the sum of its proper divisors (117496921865595).

245012332057221 is a wasteful number, since it uses less digits than its factorization.

245012332057221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366842.

The product of its (nonzero) digits is 201600, while the sum is 39.

Adding to 245012332057221 its reverse (122750233210542), we get a palindrome (367762565267763).

The spelling of 245012332057221 in words is "two hundred forty-five trillion, twelve billion, three hundred thirty-two million, fifty-seven thousand, two hundred twenty-one".