212146265 has 4 divisors (see below), whose sum is σ = 254575524. Its totient is φ = 169717008.

The previous prime is 212146211. The next prime is 212146309. The reversal of 212146265 is 562641212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124835929 + 87310336 = 11173^2 + 9344^2 .

It is a cyclic number.

It is not a de Polignac number, because 212146265 - 2⁶ = 212146201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21214622 + ... + 21214631.

It is an arithmetic number, because the mean of its divisors is an integer number (63643881).

Almost surely, 2^212146265 is an apocalyptic number.

It is an amenable number.

212146265 is a deficient number, since it is larger than the sum of its proper divisors (42429259).

212146265 is an equidigital number, since it uses as much as digits as its factorization.

212146265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42429258.

The product of its digits is 5760, while the sum is 29.

The square root of 212146265 is about 14565.2416732439. The cubic root of 212146265 is about 596.4102930220.

Adding to 212146265 its reverse (562641212), we get a palindrome (774787477).

The spelling of 212146265 in words is "two hundred twelve million, one hundred forty-six thousand, two hundred sixty-five".