It is a happy number.
121010 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is an Ulam number.
It is an alternating number because its digits alternate between odd and even.
2121010 is an apocalyptic number.
121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121010 is a wasteful number, since it uses less digits than its factorization.
121010 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12108.
The square root of 121010 is about 347.8649163109. The cubic root of 121010 is about 49.4622369535.
Adding to 121010 its reverse (10121), we get a palindrome (131131).
Subtracting from 121010 its reverse (10121), we obtain a square (110889 = 3332).
The spelling of 121010 in words is "one hundred twenty-one thousand, ten", and thus it is an iban number.