1100321121 has 16 divisors (see below), whose sum is σ = 1475585280. Its totient is φ = 729315840.

The previous prime is 1100321119. The next prime is 1100321177. The reversal of 1100321121 is 1211230011.

It is not a de Polignac number, because 1100321121 - 2¹ = 1100321119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100321097 and 1100321106.

It is not an unprimeable number, because it can be changed into a prime (1100321191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410616 + ... + 413286.

It is an arithmetic number, because the mean of its divisors is an integer number (92224080).

Almost surely, 2^1100321121 is an apocalyptic number.

It is an amenable number.

1100321121 is a deficient number, since it is larger than the sum of its proper divisors (375264159).

1100321121 is a wasteful number, since it uses less digits than its factorization.

1100321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1100321121 is about 33171.0886315177. The cubic root of 1100321121 is about 1032.3805562356.

Adding to 1100321121 its reverse (1211230011), we get a palindrome (2311551132).

The spelling of 1100321121 in words is "one billion, one hundred million, three hundred twenty-one thousand, one hundred twenty-one".