1105100021 has 8 divisors (see below), whose sum is σ = 1213840320. Its totient is φ = 1001417472.

The previous prime is 1105099991. The next prime is 1105100027. The reversal of 1105100021 is 1200015011.

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 1105100021 - 2²² = 1100905717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1105099975 and 1105100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105100027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263980 + ... + 1264853.

It is an arithmetic number, because the mean of its divisors is an integer number (151730040).

Almost surely, 2^1105100021 is an apocalyptic number.

It is an amenable number.

1105100021 is a deficient number, since it is larger than the sum of its proper divisors (108740299).

1105100021 is a wasteful number, since it uses less digits than its factorization.

1105100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528875.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1105100021 is about 33243.0447011100. The cubic root of 1105100021 is about 1033.8730048043.

Adding to 1105100021 its reverse (1200015011), we get a palindrome (2305115032).

The spelling of 1105100021 in words is "one billion, one hundred five million, one hundred thousand, twenty-one".