212134144 has 18 divisors (see below), whose sum is σ = 423440150. Its totient is φ = 106066944.

The previous prime is 212134133. The next prime is 212134229. The reversal of 212134144 is 441431212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 132710400 + 79423744 = 11520^2 + 8912^2 .

It is a super-2 number, since 2×212134144² = 90001790101225472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414069 + ... + 414580.

Almost surely, 2^212134144 is an apocalyptic number.

It is an amenable number.

212134144 is a deficient number, since it is larger than the sum of its proper divisors (211306006).

212134144 is an frugal number, since it uses more digits than its factorization.

212134144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828665 (or 828651 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 212134144 is about 14564.8255739641. The cubic root of 212134144 is about 596.3989341500.

Adding to 212134144 its reverse (441431212), we get a palindrome (653565356).

The spelling of 212134144 in words is "two hundred twelve million, one hundred thirty-four thousand, one hundred forty-four".