55122205342321 has 32 divisors (see below), whose sum is σ = 61784720363520. Its totient is φ = 48846665335104.

The previous prime is 55122205342319. The next prime is 55122205342361. The reversal of 55122205342321 is 12324350222155.

It is not a de Polignac number, because 55122205342321 - 2¹ = 55122205342319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55122205342361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168270336 + ... + 168597598.

It is an arithmetic number, because the mean of its divisors is an integer number (1930772511360).

Almost surely, 2^{55122205342321} is an apocalyptic number.

It is an amenable number.

55122205342321 is a deficient number, since it is larger than the sum of its proper divisors (6662515021199).

55122205342321 is a wasteful number, since it uses less digits than its factorization.

55122205342321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332485.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 55122205342321 its reverse (12324350222155), we get a palindrome (67446555564476).

The spelling of 55122205342321 in words is "fifty-five trillion, one hundred twenty-two billion, two hundred five million, three hundred forty-two thousand, three hundred twenty-one".