245112332455221 has 64 divisors (see below), whose sum is σ = 407975815065600. Its totient is φ = 127169791257600.

The previous prime is 245112332455219. The next prime is 245112332455223. The reversal of 245112332455221 is 122554233211542.

It is an interprime number because it is at equal distance from previous prime (245112332455219) and next prime (245112332455223).

It is not a de Polignac number, because 245112332455221 - 2¹ = 245112332455219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245112332455223) 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, 855489775 + ... + 855776243.

It is an arithmetic number, because the mean of its divisors is an integer number (6374622110400).

Almost surely, 2^{245112332455221} is an apocalyptic number.

245112332455221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

245112332455221 is a deficient number, since it is larger than the sum of its proper divisors (162863482610379).

245112332455221 is a wasteful number, since it uses less digits than its factorization.

245112332455221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291170.

The product of its digits is 576000, while the sum is 42.

Adding to 245112332455221 its reverse (122554233211542), we get a palindrome (367666565666763).

The spelling of 245112332455221 in words is "two hundred forty-five trillion, one hundred twelve billion, three hundred thirty-two million, four hundred fifty-five thousand, two hundred twenty-one".