100011321 has 8 divisors (see below), whose sum is σ = 148164960. Its totient is φ = 66674196.

The previous prime is 100011287. The next prime is 100011349. The reversal of 100011321 is 123110001.

It is not a de Polignac number, because 100011321 - 2²² = 95817017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100011361) 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, 1852035 + ... + 1852088.

It is an arithmetic number, because the mean of its divisors is an integer number (18520620).

Almost surely, 2^100011321 is an apocalyptic number.

It is an amenable number.

100011321 is a deficient number, since it is larger than the sum of its proper divisors (48153639).

100011321 is an equidigital number, since it uses as much as digits as its factorization.

100011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704132 (or 3704126 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 100011321 is about 10000.5660339803. The cubic root of 100011321 is about 464.1763985094.

Adding to 100011321 its reverse (123110001), we get a palindrome (223121322).

It can be divided in two parts, 1000 and 11321, that added together give a palindrome (12321).

The spelling of 100011321 in words is "one hundred million, eleven thousand, three hundred twenty-one".