55012105211 has 4 divisors (see below), whose sum is σ = 62870977392. Its totient is φ = 47153233032.

The previous prime is 55012105201. The next prime is 55012105231. The reversal of 55012105211 is 11250121055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55012105211 - 2¹⁰ = 55012104187 is a prime.

It is a super-2 number, since 2×55012105211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55012105201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3929436080 + ... + 3929436093.

It is an arithmetic number, because the mean of its divisors is an integer number (15717744348).

Almost surely, 2^55012105211 is an apocalyptic number.

55012105211 is a deficient number, since it is larger than the sum of its proper divisors (7858872181).

55012105211 is an equidigital number, since it uses as much as digits as its factorization.

55012105211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858872180.

The product of its (nonzero) digits is 500, while the sum is 23.

Adding to 55012105211 its reverse (11250121055), we get a palindrome (66262226266).

The spelling of 55012105211 in words is "fifty-five billion, twelve million, one hundred five thousand, two hundred eleven".