10212228 has 36 divisors (see below), whose sum is σ = 27801228. Its totient is φ = 3142080.

The previous prime is 10212203. The next prime is 10212233. The reversal of 10212228 is 82221201.

It is a happy number.

10212228 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3617604 + 6594624 = 1902^2 + 2568^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 10212228.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10443 + ... + 11378.

Almost surely, 2^10212228 is an apocalyptic number.

10212228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10212228 is an abundant number, since it is smaller than the sum of its proper divisors (17589000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10212228 is a wasteful number, since it uses less digits than its factorization.

10212228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21844 (or 21839 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 10212228 is about 3195.6576787885. The cubic root of 10212228 is about 216.9569169851.

Adding to 10212228 its reverse (82221201), we get a palindrome (92433429).

It can be divided in two parts, 10212 and 228, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 10212228 in words is "ten million, two hundred twelve thousand, two hundred twenty-eight".