212135452 has 24 divisors (see below), whose sum is σ = 393631056. Its totient is φ = 99687168.

The previous prime is 212135419. The next prime is 212135453. The reversal of 212135452 is 254531212.

212135452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212135453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58278 + ... + 61810.

It is an arithmetic number, because the mean of its divisors is an integer number (16401294).

Almost surely, 2^212135452 is an apocalyptic number.

It is an amenable number.

212135452 is a deficient number, since it is larger than the sum of its proper divisors (181495604).

212135452 is a wasteful number, since it uses less digits than its factorization.

212135452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437 (or 4435 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 212135452 is about 14564.8704765954. The cubic root of 212135452 is about 596.4001599282.

Adding to 212135452 its reverse (254531212), we get a palindrome (466666664).

It can be divided in two parts, 2121 and 35452, that added together give a palindrome (37573).

The spelling of 212135452 in words is "two hundred twelve million, one hundred thirty-five thousand, four hundred fifty-two".