211998012 has 48 divisors (see below), whose sum is σ = 518891520. Its totient is φ = 67286592.

The previous prime is 211998011. The next prime is 211998013. The reversal of 211998012 is 210899112.

211998012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211998011) and next prime (211998013).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211998011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15789 + ... + 25947.

It is an arithmetic number, because the mean of its divisors is an integer number (10810240).

Almost surely, 2^211998012 is an apocalyptic number.

It is an amenable number.

211998012 is an abundant number, since it is smaller than the sum of its proper divisors (306893508).

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

211998012 is a wasteful number, since it uses less digits than its factorization.

211998012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250 (or 10248 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 211998012 is about 14560.1515102007. The cubic root of 211998012 is about 596.2713319460.

The spelling of 211998012 in words is "two hundred eleven million, nine hundred ninety-eight thousand, twelve".