Subtracting from 122280 its sum of digits (15), we obtain a triangular number (122265 = T494).
It is a congruent number.
It is an unprimeable number.
2122280 is an apocalyptic number.
122280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
122280 is a wasteful number, since it uses less digits than its factorization.
122280 is an evil number, because the sum of its binary digits is even.
The square root of 122280 is about 349.6855730510. The cubic root of 122280 is about 49.6346705220.
The spelling of 122280 in words is "one hundred twenty-two thousand, two hundred eighty".