211543012 has 6 divisors (see below), whose sum is σ = 370200278. Its totient is φ = 105771504.

The previous prime is 211543001. The next prime is 211543021. The reversal of 211543012 is 210345112.

It can be written as a sum of positive squares in only one way, i.e., 205520896 + 6022116 = 14336^2 + 2454^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26442873 + ... + 26442880.

Almost surely, 2^211543012 is an apocalyptic number.

It is an amenable number.

211543012 is a deficient number, since it is larger than the sum of its proper divisors (158657266).

211543012 is a wasteful number, since it uses less digits than its factorization.

211543012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52885757 (or 52885755 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 211543012 is about 14544.5182800944. The cubic root of 211543012 is about 595.8444446371.

Adding to 211543012 its reverse (210345112), we get a palindrome (421888124).

The spelling of 211543012 in words is "two hundred eleven million, five hundred forty-three thousand, twelve".