211240252 has 48 divisors (see below), whose sum is σ = 409171840. Its totient is φ = 95038272.

The previous prime is 211240247. The next prime is 211240259. The reversal of 211240252 is 252042112.

211240252 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 (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211240259) 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, 120043 + ... + 121789.

Almost surely, 2^211240252 is an apocalyptic number.

It is an amenable number.

211240252 is a deficient number, since it is larger than the sum of its proper divisors (197931588).

211240252 is a wasteful number, since it uses less digits than its factorization.

211240252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 211240252 is about 14534.1065084855. The cubic root of 211240252 is about 595.5600517335.

Adding to 211240252 its reverse (252042112), we get a palindrome (463282364).

The spelling of 211240252 in words is "two hundred eleven million, two hundred forty thousand, two hundred fifty-two".