1101321121 has 8 divisors (see below), whose sum is σ = 1149569280. Its totient is φ = 1053103392.

The previous prime is 1101321113. The next prime is 1101321127. The reversal of 1101321121 is 1211231011.

It is a happy number.

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

It is not a de Polignac number, because 1101321121 - 2³ = 1101321113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101321127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97285 + ... + 108013.

It is an arithmetic number, because the mean of its divisors is an integer number (143696160).

Almost surely, 2^1101321121 is an apocalyptic number.

It is an amenable number.

1101321121 is a deficient number, since it is larger than the sum of its proper divisors (48248159).

1101321121 is a wasteful number, since it uses less digits than its factorization.

1101321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1101321121 is about 33186.1585755266. The cubic root of 1101321121 is about 1032.6932128298.

Adding to 1101321121 its reverse (1211231011), we get a palindrome (2312552132).

It can be divided in two parts, 110 and 1321121, that added together give a palindrome (1321231).

The spelling of 1101321121 in words is "one billion, one hundred one million, three hundred twenty-one thousand, one hundred twenty-one".