211776012 has 192 divisors, whose sum is σ = 659850240. Its totient is φ = 57480192.

The previous prime is 211776007. The next prime is 211776013. The reversal of 211776012 is 210677112.

211776012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (211776013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1874068 + ... + 1874180.

It is an arithmetic number, because the mean of its divisors is an integer number (3436720).

Almost surely, 2^211776012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211776012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329925120).

211776012 is an abundant number, since it is smaller than the sum of its proper divisors (448074228).

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

211776012 is a wasteful number, since it uses less digits than its factorization.

211776012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 211776012 is about 14552.5259663056. The cubic root of 211776012 is about 596.0631248546.

The spelling of 211776012 in words is "two hundred eleven million, seven hundred seventy-six thousand, twelve".