211827012 has 12 divisors (see below), whose sum is σ = 494263056. Its totient is φ = 70609000.

The previous prime is 211827001. The next prime is 211827013. The reversal of 211827012 is 210728112.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (211827013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8826114 + ... + 8826137.

It is an arithmetic number, because the mean of its divisors is an integer number (41188588).

Almost surely, 2^211827012 is an apocalyptic number.

It is an amenable number.

211827012 is an abundant number, since it is smaller than the sum of its proper divisors (282436044).

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

211827012 is a wasteful number, since it uses less digits than its factorization.

211827012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17652258 (or 17652256 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 211827012 is about 14554.2781339371. The cubic root of 211827012 is about 596.1109690826.

The spelling of 211827012 in words is "two hundred eleven million, eight hundred twenty-seven thousand, twelve".