55224205121 has 8 divisors (see below), whose sum is σ = 55570631424. Its totient is φ = 54877966560.

The previous prime is 55224205117. The next prime is 55224205129. The reversal of 55224205121 is 12150242255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55224205121 - 2² = 55224205117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55224205129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568376 + ... + 658406.

It is an arithmetic number, because the mean of its divisors is an integer number (6946328928).

Almost surely, 2^55224205121 is an apocalyptic number.

It is an amenable number.

55224205121 is a deficient number, since it is larger than the sum of its proper divisors (346426303).

55224205121 is a wasteful number, since it uses less digits than its factorization.

55224205121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93871.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 55224205121 its reverse (12150242255), we get a palindrome (67374447376).

The spelling of 55224205121 in words is "fifty-five billion, two hundred twenty-four million, two hundred five thousand, one hundred twenty-one".