212133004 has 24 divisors (see below), whose sum is σ = 395152128. Its totient is φ = 99298560.

The previous prime is 212133001. The next prime is 212133011. The reversal of 212133004 is 400331212.

It is a happy number.

It is a super-2 number, since 2×212133004² = 90000822772128032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212133001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4822 + ... + 21154.

It is an arithmetic number, because the mean of its divisors is an integer number (16464672).

Almost surely, 2^212133004 is an apocalyptic number.

It is an amenable number.

212133004 is a deficient number, since it is larger than the sum of its proper divisors (183019124).

212133004 is a wasteful number, since it uses less digits than its factorization.

212133004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16545 (or 16543 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212133004 is about 14564.7864385304. The cubic root of 212133004 is about 596.3978658071.

Adding to 212133004 its reverse (400331212), we get a palindrome (612464216).

The spelling of 212133004 in words is "two hundred twelve million, one hundred thirty-three thousand, four".