110100021 has 8 divisors (see below), whose sum is σ = 147331104. Its totient is φ = 73134480.

The previous prime is 110100019. The next prime is 110100061. The reversal of 110100021 is 120001011.

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

It is not a de Polignac number, because 110100021 - 2¹ = 110100019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110099982 and 110100009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110100061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65415 + ... + 67076.

It is an arithmetic number, because the mean of its divisors is an integer number (18416388).

Almost surely, 2^110100021 is an apocalyptic number.

It is an amenable number.

110100021 is a deficient number, since it is larger than the sum of its proper divisors (37231083).

110100021 is a wasteful number, since it uses less digits than its factorization.

110100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132771.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 110100021 is about 10492.8557123407. The cubic root of 110100021 is about 479.2871667437.

Adding to 110100021 its reverse (120001011), we get a palindrome (230101032).

The spelling of 110100021 in words is "one hundred ten million, one hundred thousand, twenty-one".