1101001121 has 8 divisors (see below), whose sum is σ = 1201577664. Its totient is φ = 1000505520.

The previous prime is 1101001087. The next prime is 1101001123. The reversal of 1101001121 is 1211001011.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101001121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101001099 and 1101001108.

It is not an unprimeable number, because it can be changed into a prime (1101001123) 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, 10211 + ... + 48023.

It is an arithmetic number, because the mean of its divisors is an integer number (150197208).

Almost surely, 2^1101001121 is an apocalyptic number.

1101001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101001121 is a deficient number, since it is larger than the sum of its proper divisors (100576543).

1101001121 is a wasteful number, since it uses less digits than its factorization.

1101001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40471.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1101001121 is about 33181.3369381042. The cubic root of 1101001121 is about 1032.5931833188.

Adding to 1101001121 its reverse (1211001011), we get a palindrome (2312002132).

The spelling of 1101001121 in words is "one billion, one hundred one million, one thousand, one hundred twenty-one".