211227012 has 18 divisors (see below), whose sum is σ = 533935038. Its totient is φ = 70408992.

The previous prime is 211226999. The next prime is 211227031. The reversal of 211227012 is 210722112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 186486336 + 24740676 = 13656^2 + 4974^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 5 ways as a sum of consecutive naturals, for example, 2933673 + ... + 2933744.

Almost surely, 2^211227012 is an apocalyptic number.

It is an amenable number.

211227012 is an abundant number, since it is smaller than the sum of its proper divisors (322708026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211227012 is a wasteful number, since it uses less digits than its factorization.

211227012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867427 (or 5867422 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 211227012 is about 14533.6510209926. The cubic root of 211227012 is about 595.5476087454.

Adding to 211227012 its reverse (210722112), we get a palindrome (421949124).

The spelling of 211227012 in words is "two hundred eleven million, two hundred twenty-seven thousand, twelve".