212226452 has 12 divisors (see below), whose sum is σ = 375074196. Its totient is φ = 105062400.

The previous prime is 212226449. The next prime is 212226461. The reversal of 212226452 is 254622212.

It can be written as a sum of positive squares in 2 ways, for example, as 85303696 + 126922756 = 9236^2 + 11266^2 .

It is a congruent 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, 262253 + ... + 263060.

It is an arithmetic number, because the mean of its divisors is an integer number (31256183).

Almost surely, 2^212226452 is an apocalyptic number.

It is an amenable number.

212226452 is a deficient number, since it is larger than the sum of its proper divisors (162847744).

212226452 is a wasteful number, since it uses less digits than its factorization.

212226452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525418 (or 525416 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 212226452 is about 14567.9940966490. The cubic root of 212226452 is about 596.4854272349.

Adding to 212226452 its reverse (254622212), we get a palindrome (466848664).

The spelling of 212226452 in words is "two hundred twelve million, two hundred twenty-six thousand, four hundred fifty-two".