106121111 has 4 divisors (see below), whose sum is σ = 106405992. Its totient is φ = 105836232.

The previous prime is 106121107. The next prime is 106121129. The reversal of 106121111 is 111121601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111121601 = 113 ⋅983377.

It is a cyclic number.

It is not a de Polignac number, because 106121111 - 2² = 106121107 is a prime.

It is a super-2 number, since 2×106121111² = 22523380399748642, which 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 (106121131) 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, 141881 + ... + 142626.

It is an arithmetic number, because the mean of its divisors is an integer number (26601498).

Almost surely, 2^106121111 is an apocalyptic number.

106121111 is a deficient number, since it is larger than the sum of its proper divisors (284881).

106121111 is an equidigital number, since it uses as much as digits as its factorization.

106121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284880.

The product of its (nonzero) digits is 12, while the sum is 14.

The square root of 106121111 is about 10301.5101320146. The cubic root of 106121111 is about 473.4425235214.

Adding to 106121111 its reverse (111121601), we get a palindrome (217242712).

The spelling of 106121111 in words is "one hundred six million, one hundred twenty-one thousand, one hundred eleven".