211738212 has 90 divisors (see below), whose sum is σ = 643945302. Its totient is φ = 60492096.

The previous prime is 211738211. The next prime is 211738231. The reversal of 211738212 is 212837112.

It can be written as a sum of positive squares in only one way, i.e., 161951076 + 49787136 = 12726^2 + 7056^2 .

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 (211738211) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9208 + ... + 22544.

Almost surely, 2^211738212 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 211738212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321972651).

211738212 is an abundant number, since it is smaller than the sum of its proper divisors (432207090).

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

211738212 is a wasteful number, since it uses less digits than its factorization.

211738212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367 (or 13349 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 211738212 is about 14551.2271647446. The cubic root of 211738212 is about 596.0276588819.

The spelling of 211738212 in words is "two hundred eleven million, seven hundred thirty-eight thousand, two hundred twelve".