211230212 has 6 divisors (see below), whose sum is σ = 369652878. Its totient is φ = 105615104.

The previous prime is 211230199. The next prime is 211230221. The reversal of 211230212 is 212032112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 194714116 + 16516096 = 13954^2 + 4064^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26403773 + ... + 26403780.

It is an arithmetic number, because the mean of its divisors is an integer number (61608813).

Almost surely, 2^211230212 is an apocalyptic number.

It is an amenable number.

211230212 is a deficient number, since it is larger than the sum of its proper divisors (158422666).

211230212 is a wasteful number, since it uses less digits than its factorization.

211230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52807557 (or 52807555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211230212 is about 14533.7611099123. The cubic root of 211230212 is about 595.5506161618.

Adding to 211230212 its reverse (212032112), we get a palindrome (423262324).

The spelling of 211230212 in words is "two hundred eleven million, two hundred thirty thousand, two hundred twelve".