1011121 has 4 divisors (see below), whose sum is σ = 1024000. Its totient is φ = 998244.

The previous prime is 1011107. The next prime is 1011137. The reversal of 1011121 is 1211101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1211101 = 433 ⋅2797.

It is not a de Polignac number, because 1011121 - 2⁷ = 1010993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011191) 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 3 ways as a sum of consecutive naturals, for example, 6321 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (256000).

2^1011121 is an apocalyptic number.

It is an amenable number.

1011121 is a deficient number, since it is larger than the sum of its proper divisors (12879).

1011121 is an equidigital number, since it uses as much as digits as its factorization.

1011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12878.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1011121 is about 1005.5451257900. The cubic root of 1011121 is about 100.3693342428.

Adding to 1011121 its reverse (1211101), we get a palindrome (2222222).

Multiplying 1011121 by its reverse (1211101), we get a palindrome (1224569654221).

The spelling of 1011121 in words is "one million, eleven thousand, one hundred twenty-one".