55512106121 has 4 divisors (see below), whose sum is σ = 55756653072. Its totient is φ = 55267559172.

The previous prime is 55512106103. The next prime is 55512106171. The reversal of 55512106121 is 12160121555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55512106121 - 2¹⁰ = 55512105097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55512106171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122273135 + ... + 122273588.

It is an arithmetic number, because the mean of its divisors is an integer number (13939163268).

Almost surely, 2^55512106121 is an apocalyptic number.

It is an amenable number.

55512106121 is a deficient number, since it is larger than the sum of its proper divisors (244546951).

55512106121 is a wasteful number, since it uses less digits than its factorization.

55512106121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244546950.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 55512106121 its reverse (12160121555), we get a palindrome (67672227676).

The spelling of 55512106121 in words is "fifty-five billion, five hundred twelve million, one hundred six thousand, one hundred twenty-one".