109010021 has 8 divisors (see below), whose sum is σ = 112092288. Its totient is φ = 105948000.

The previous prime is 109010017. The next prime is 109010023. The reversal of 109010021 is 120010901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109010021 - 2² = 109010017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109009978 and 109010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109010023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6206 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (14011536).

Almost surely, 2^109010021 is an apocalyptic number.

It is an amenable number.

109010021 is a deficient number, since it is larger than the sum of its proper divisors (3082267).

109010021 is an equidigital number, since it uses as much as digits as its factorization.

109010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10123.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 109010021 is about 10440.7864167408. The cubic root of 109010021 is about 477.7002564549.

Adding to 109010021 its reverse (120010901), we get a palindrome (229020922).

It can be divided in two parts, 1090 and 10021, that added together give a palindrome (11111).

The spelling of 109010021 in words is "one hundred nine million, ten thousand, twenty-one".