Adding to 12101210 its reverse (1210121), we get a palindrome (13311331).
12101210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
12101210 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is an alternating number because its digits alternate between odd and even.
It is an unprimeable number.
Almost surely, 212101210 is an apocalyptic number.
12101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12101210 is a wasteful number, since it uses less digits than its factorization.
12101210 is an evil number, because the sum of its binary digits is even.
The square root of 12101210 is about 3478.6793471086. The cubic root of 12101210 is about 229.5846947796.
The spelling of 12101210 in words is "twelve million, one hundred one thousand, two hundred ten".