212226776 has 32 divisors (see below), whose sum is σ = 428490000. Its totient is φ = 98174976.

The previous prime is 212226757. The next prime is 212226797. The reversal of 212226776 is 677622212.

212226776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5201 + ... + 21248.

Almost surely, 2^212226776 is an apocalyptic number.

It is an amenable number.

212226776 is an abundant number, since it is smaller than the sum of its proper divisors (216263224).

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

212226776 is a wasteful number, since it uses less digits than its factorization.

212226776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26531 (or 26527 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 212226776 is about 14568.0052169128. The cubic root of 212226776 is about 596.4857307804.

Adding to 212226776 its reverse (677622212), we get a palindrome (889848988).

The spelling of 212226776 in words is "two hundred twelve million, two hundred twenty-six thousand, seven hundred seventy-six".