212137452 has 18 divisors (see below), whose sum is σ = 536236428. Its totient is φ = 70712472.

The previous prime is 212137439. The next prime is 212137469. The reversal of 212137452 is 254731212.

212137452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2946318 + ... + 2946389.

Almost surely, 2^212137452 is an apocalyptic number.

It is an amenable number.

212137452 is an abundant number, since it is smaller than the sum of its proper divisors (324098976).

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

212137452 is a wasteful number, since it uses less digits than its factorization.

212137452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892717 (or 5892712 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 212137452 is about 14564.9391347853. The cubic root of 212137452 is about 596.4020341969.

Adding to 212137452 its reverse (254731212), we get a palindrome (466868664).

The spelling of 212137452 in words is "two hundred twelve million, one hundred thirty-seven thousand, four hundred fifty-two".