210102212 has 6 divisors (see below), whose sum is σ = 367678878.
Its totient is φ = 105051104.
The previous prime is 210102203. The next prime is 210102223. The reversal of 210102212 is 212201012.
It is a happy number.
210102212 is digitally balanced in base 2 and base 3, 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 only one way, i.e., 209207296 + 894916 = 14464^2 + 946^2
It is a junction number, because it is equal to n+sod(n) for n = 210102193 and 210102202.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26262773 + ... + 26262780.
It is an arithmetic number, because the mean of its divisors is an integer number (61279813).
Almost surely, 2210102212 is an apocalyptic number.
It is an amenable number.
210102212 is a deficient number, since it is larger than the sum of its proper divisors (157576666).
210102212 is a wasteful number, since it uses less digits than its factorization.
210102212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 52525557 (or 52525555 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 210102212 is about 14494.9029662154.
The cubic root of 210102212 is about 594.4886145794.
Adding to 210102212 its reverse (212201012), we get a palindrome (422303224).
The spelling of 210102212 in words is "two hundred ten million, one hundred two thousand, two hundred twelve".