212244530066 has 4 divisors (see below), whose sum is σ = 318366795102. Its totient is φ = 106122265032.

The previous prime is 212244530023. The next prime is 212244530077. The reversal of 212244530066 is 660035442212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 155610525625 + 56634004441 = 394475^2 + 237979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53061132515 + ... + 53061132518.

Almost surely, 2^212244530066 is an apocalyptic number.

212244530066 is a deficient number, since it is larger than the sum of its proper divisors (106122265036).

212244530066 is a wasteful number, since it uses less digits than its factorization.

212244530066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106122265035.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 212244530066 its reverse (660035442212), we get a palindrome (872279972278).

The spelling of 212244530066 in words is "two hundred twelve billion, two hundred forty-four million, five hundred thirty thousand, sixty-six".