106561101111 has 4 divisors (see below), whose sum is σ = 142081468152. Its totient is φ = 71040734072.

The previous prime is 106561101079. The next prime is 106561101131. The reversal of 106561101111 is 111101165601.

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 106561101111 - 2⁵ = 106561101079 is a prime.

It is a super-2 number, since 2×106561101111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106561101131) 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, 17760183516 + ... + 17760183521.

It is an arithmetic number, because the mean of its divisors is an integer number (35520367038).

Almost surely, 2^106561101111 is an apocalyptic number.

106561101111 is a deficient number, since it is larger than the sum of its proper divisors (35520367041).

106561101111 is an equidigital number, since it uses as much as digits as its factorization.

106561101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35520367040.

The product of its (nonzero) digits is 180, while the sum is 24.

Adding to 106561101111 its reverse (111101165601), we get a palindrome (217662266712).

The spelling of 106561101111 in words is "one hundred six billion, five hundred sixty-one million, one hundred one thousand, one hundred eleven".