211243252 has 36 divisors (see below), whose sum is σ = 410235840. Its totient is φ = 95098960.

The previous prime is 211243243. The next prime is 211243271. The reversal of 211243252 is 252342112.

It is a happy number.

211243252 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 (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49749 + ... + 53827.

It is an arithmetic number, because the mean of its divisors is an integer number (11395440).

Almost surely, 2^211243252 is an apocalyptic number.

211243252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211243252 is a deficient number, since it is larger than the sum of its proper divisors (198992588).

211243252 is a wasteful number, since it uses less digits than its factorization.

211243252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212 (or 4199 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 211243252 is about 14534.2097136377. The cubic root of 211243252 is about 595.5628710695.

Adding to 211243252 its reverse (252342112), we get a palindrome (463585364).

The spelling of 211243252 in words is "two hundred eleven million, two hundred forty-three thousand, two hundred fifty-two".