212212400 has 30 divisors (see below), whose sum is σ = 509841252. Its totient is φ = 84884800.

The previous prime is 212212367. The next prime is 212212409. The reversal of 212212400 is 4212212.

It is not an unprimeable number, because it can be changed into a prime (212212409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264866 + ... + 265665.

Almost surely, 2^212212400 is an apocalyptic number.

212212400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212400 is an abundant number, since it is smaller than the sum of its proper divisors (297628852).

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

212212400 is a wasteful number, since it uses less digits than its factorization.

212212400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530549 (or 530538 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212212400 is about 14567.5117985193. The cubic root of 212212400 is about 596.4722620551.

Adding to 212212400 its reverse (4212212), we get a palindrome (216424612).

The spelling of 212212400 in words is "two hundred twelve million, two hundred twelve thousand, four hundred".