212004004 has 12 divisors (see below), whose sum is σ = 372110284. Its totient is φ = 105686784.

The previous prime is 212003993. The next prime is 212004029. The reversal of 212004004 is 400400212.

It can be written as a sum of positive squares in 2 ways, for example, as 58491904 + 153512100 = 7648^2 + 12390^2 .

212004004 is a modest number, since divided by 4004 gives 212 as remainder.

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 3 ways as a sum of consecutive naturals, for example, 77289 + ... + 79984.

Almost surely, 2^212004004 is an apocalyptic number.

It is an amenable number.

212004004 is a deficient number, since it is larger than the sum of its proper divisors (160106280).

212004004 is a wasteful number, since it uses less digits than its factorization.

212004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157614 (or 157612 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 212004004 is about 14560.3572758363. The cubic root of 212004004 is about 596.2769496468.

Adding to 212004004 its reverse (400400212), we get a palindrome (612404216).

The spelling of 212004004 in words is "two hundred twelve million, four thousand, four".