211110212 has 6 divisors (see below), whose sum is σ = 369442878. Its totient is φ = 105555104.

The previous prime is 211110209. The next prime is 211110223. The reversal of 211110212 is 212011112.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 94167616 = 10814^2 + 9704^2 .

It is a super-2 number, since 2×211110212² = 89135043221369888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211110193 and 211110202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26388773 + ... + 26388780.

It is an arithmetic number, because the mean of its divisors is an integer number (61573813).

Almost surely, 2^211110212 is an apocalyptic number.

It is an amenable number.

211110212 is a deficient number, since it is larger than the sum of its proper divisors (158332666).

211110212 is a wasteful number, since it uses less digits than its factorization.

211110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52777557 (or 52777555 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 211110212 is about 14529.6322045673. The cubic root of 211110212 is about 595.4378172542.

Adding to 211110212 its reverse (212011112), we get a palindrome (423121324).

The spelling of 211110212 in words is "two hundred eleven million, one hundred ten thousand, two hundred twelve".