55112121611201 has 24 divisors (see below), whose sum is σ = 57728057365440. Its totient is φ = 52610265953696.

The previous prime is 55112121611147. The next prime is 55112121611207. The reversal of 55112121611201 is 10211612121155.

It is not a de Polignac number, because 55112121611201 - 2²² = 55112117416897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55112121611207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767660015 + ... + 767731803.

It is an arithmetic number, because the mean of its divisors is an integer number (2405335723560).

Almost surely, 2^{55112121611201} is an apocalyptic number.

It is an amenable number.

55112121611201 is a deficient number, since it is larger than the sum of its proper divisors (2615935754239).

55112121611201 is a wasteful number, since it uses less digits than its factorization.

55112121611201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74725 (or 74702 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 29.

Adding to 55112121611201 its reverse (10211612121155), we get a palindrome (65323733732356).

The spelling of 55112121611201 in words is "fifty-five trillion, one hundred twelve billion, one hundred twenty-one million, six hundred eleven thousand, two hundred one".