105561101101011 has 16 divisors (see below), whose sum is σ = 148319278665600. Its totient is φ = 66596662833408.

The previous prime is 105561101100997. The next prime is 105561101101097. The reversal of 105561101101011 is 110101101165501.

It is a happy number.

It is not a de Polignac number, because 105561101101011 - 2¹¹ = 105561101098963 is a prime.

It is a super-2 number, since 2×105561101101011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105561101141011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020868446 + ... + 1020971843.

It is an arithmetic number, because the mean of its divisors is an integer number (9269954916600).

Almost surely, 2^{105561101101011} is an apocalyptic number.

105561101101011 is a deficient number, since it is larger than the sum of its proper divisors (42758177564589).

105561101101011 is a wasteful number, since it uses less digits than its factorization.

105561101101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041841218.

The product of its (nonzero) digits is 150, while the sum is 24.

Adding to 105561101101011 its reverse (110101101165501), we get a palindrome (215662202266512).

The spelling of 105561101101011 in words is "one hundred five trillion, five hundred sixty-one billion, one hundred one million, one hundred one thousand, eleven".