212226464 has 24 divisors (see below), whose sum is σ = 418420548. Its totient is φ = 105960960.

The previous prime is 212226461. The next prime is 212226473. The reversal of 212226464 is 464622212.

It can be written as a sum of positive squares in 2 ways, for example, as 204718864 + 7507600 = 14308^2 + 2740^2 .

It is not an unprimeable number, because it can be changed into a prime (212226461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19844 + ... + 28604.

Almost surely, 2^212226464 is an apocalyptic number.

It is an amenable number.

212226464 is a deficient number, since it is larger than the sum of its proper divisors (206194084).

212226464 is an equidigital number, since it uses as much as digits as its factorization.

212226464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528 (or 9520 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 212226464 is about 14567.9945085108. The cubic root of 212226464 is about 596.4854384773.

Adding to 212226464 its reverse (464622212), we get a palindrome (676848676).

The spelling of 212226464 in words is "two hundred twelve million, two hundred twenty-six thousand, four hundred sixty-four".