1001121 has 16 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 579920.

The previous prime is 1001107. The next prime is 1001123. The reversal of 1001121 is 1211001.

1001121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1001121 - 2⁵ = 1001089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001123) 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, 100 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2^1001121 is an apocalyptic number.

1001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001121 is a deficient number, since it is larger than the sum of its proper divisors (519519).

1001121 is a wasteful number, since it uses less digits than its factorization.

1001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1001121 is about 1000.5603430079. The cubic root of 1001121 is about 100.0373527127.

Adding to 1001121 its reverse (1211001), we get a palindrome (2212122).

Multiplying 1001121 by its reverse (1211001), we get a palindrome (1212358532121).

It can be divided in two parts, 1001 and 121, that multiplied together give a palindrome (121121).

The spelling of 1001121 in words is "one million, one thousand, one hundred twenty-one".