212256465 has 16 divisors (see below), whose sum is σ = 346837248. Its totient is φ = 110794496.

The previous prime is 212256461. The next prime is 212256487. The reversal of 212256465 is 564652212.

212256465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212256465 - 2² = 212256461 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212256461) 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, 149832 + ... + 151241.

It is an arithmetic number, because the mean of its divisors is an integer number (21677328).

Almost surely, 2^212256465 is an apocalyptic number.

It is an amenable number.

212256465 is a deficient number, since it is larger than the sum of its proper divisors (134580783).

212256465 is a wasteful number, since it uses less digits than its factorization.

212256465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301128.

The product of its digits is 28800, while the sum is 33.

The square root of 212256465 is about 14569.0241608695. The cubic root of 212256465 is about 596.5135441718.

The spelling of 212256465 in words is "two hundred twelve million, two hundred fifty-six thousand, four hundred sixty-five".