105545221061 has 4 divisors (see below), whose sum is σ = 120623109792. Its totient is φ = 90467332332.

The previous prime is 105545221051. The next prime is 105545221087. The reversal of 105545221061 is 160122545501.

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 105545221061 - 2⁶ = 105545220997 is a prime.

It is a super-2 number, since 2×105545221061² (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 3 ways as a sum of consecutive naturals, for example, 7538944355 + ... + 7538944368.

It is an arithmetic number, because the mean of its divisors is an integer number (30155777448).

Almost surely, 2^105545221061 is an apocalyptic number.

It is an amenable number.

105545221061 is a deficient number, since it is larger than the sum of its proper divisors (15077888731).

105545221061 is an equidigital number, since it uses as much as digits as its factorization.

105545221061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15077888730.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 105545221061 its reverse (160122545501), we get a palindrome (265667766562).

The spelling of 105545221061 in words is "one hundred five billion, five hundred forty-five million, two hundred twenty-one thousand, sixty-one".