211938212 has 6 divisors (see below), whose sum is σ = 370891878. Its totient is φ = 105969104.

The previous prime is 211938211. The next prime is 211938229. The reversal of 211938212 is 212839112.

211938212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 130325056 + 81613156 = 11416^2 + 9034^2 .

It is not an unprimeable number, because it can be changed into a prime (211938211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26492273 + ... + 26492280.

It is an arithmetic number, because the mean of its divisors is an integer number (61815313).

Almost surely, 2^211938212 is an apocalyptic number.

It is an amenable number.

211938212 is a deficient number, since it is larger than the sum of its proper divisors (158953666).

211938212 is a wasteful number, since it uses less digits than its factorization.

211938212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52984557 (or 52984555 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 211938212 is about 14558.0978153054. The cubic root of 211938212 is about 596.2152616422.

The spelling of 211938212 in words is "two hundred eleven million, nine hundred thirty-eight thousand, two hundred twelve".