Adding to 1011121 its reverse (1211101), we get a palindrome (2222222).
Multipling 1011121 by its reverse (1211101), we get a palindrome (1224569654221).
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 a Duffinian number.
It is a congruent number.
21011121 is an apocalyptic number.
It is an amenable number.
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 square root of 1011121 is about 1005.5451257900. The cubic root of 1011121 is about 100.3693342428.
The spelling of 1011121 in words is "one million, eleven thousand, one hundred twenty-one".