105545221055 has 8 divisors (see below), whose sum is σ = 134104516272. Its totient is φ = 79469342848.

The previous prime is 105545221051. The next prime is 105545221087. The reversal of 105545221055 is 550122545501.

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 105545221055 - 2² = 105545221051 is a prime.

It is a super-2 number, since 2×105545221055² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105545221051) 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, 620854157 + ... + 620854326.

It is an arithmetic number, because the mean of its divisors is an integer number (16763064534).

Almost surely, 2^105545221055 is an apocalyptic number.

105545221055 is a deficient number, since it is larger than the sum of its proper divisors (28559295217).

105545221055 is a wasteful number, since it uses less digits than its factorization.

105545221055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241708505.

The product of its (nonzero) digits is 50000, while the sum is 35.

Adding to 105545221055 its reverse (550122545501), we get a palindrome (655667766556).

The spelling of 105545221055 in words is "one hundred five billion, five hundred forty-five million, two hundred twenty-one thousand, fifty-five".