101109121 has 4 divisors (see below), whose sum is σ = 101294512. Its totient is φ = 100923732.

The previous prime is 101109103. The next prime is 101109131. The reversal of 101109121 is 121901101.

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 a de Polignac number, because none of the positive numbers 2^k-101109121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101109095 and 101109104.

It is not an unprimeable number, because it can be changed into a prime (101109131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91875 + ... + 92968.

It is an arithmetic number, because the mean of its divisors is an integer number (25323628).

Almost surely, 2^101109121 is an apocalyptic number.

It is an amenable number.

101109121 is a deficient number, since it is larger than the sum of its proper divisors (185391).

101109121 is an equidigital number, since it uses as much as digits as its factorization.

101109121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185390.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 101109121 is about 10055.3031282006. The cubic root of 101109121 is about 465.8686057743.

The spelling of 101109121 in words is "one hundred one million, one hundred nine thousand, one hundred twenty-one".