103218212 has 6 divisors (see below), whose sum is σ = 180631878. Its totient is φ = 51609104.

The previous prime is 103218211. The next prime is 103218217. The reversal of 103218212 is 212812301.

It can be written as a sum of positive squares in only one way, i.e., 66324736 + 36893476 = 8144^2 + 6074^2 .

It is not an unprimeable number, because it can be changed into a prime (103218211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12902273 + ... + 12902280.

It is an arithmetic number, because the mean of its divisors is an integer number (30105313).

Almost surely, 2^103218212 is an apocalyptic number.

It is an amenable number.

103218212 is a deficient number, since it is larger than the sum of its proper divisors (77413666).

103218212 is a wasteful number, since it uses less digits than its factorization.

103218212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25804557 (or 25804555 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 103218212 is about 10159.6364108171. The cubic root of 103218212 is about 469.0856101571.

The spelling of 103218212 in words is "one hundred three million, two hundred eighteen thousand, two hundred twelve".