212213004 has 12 divisors (see below), whose sum is σ = 495163704. Its totient is φ = 70737664.

The previous prime is 212212999. The next prime is 212213051. The reversal of 212213004 is 400312212.

It is a tau number, because it is divible by the number of its divisors (12).

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, 8842197 + ... + 8842220.

It is an arithmetic number, because the mean of its divisors is an integer number (41263642).

Almost surely, 2^212213004 is an apocalyptic number.

It is an amenable number.

212213004 is an abundant number, since it is smaller than the sum of its proper divisors (282950700).

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

212213004 is a wasteful number, since it uses less digits than its factorization.

212213004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17684424 (or 17684422 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 212213004 is about 14567.5325295672. The cubic root of 212213004 is about 596.4728279486.

Adding to 212213004 its reverse (400312212), we get a palindrome (612525216).

The spelling of 212213004 in words is "two hundred twelve million, two hundred thirteen thousand, four".