21133333004 has 12 divisors (see below), whose sum is σ = 42266666064. Its totient is φ = 9057142704.

The previous prime is 21133333003. The next prime is 21133333037. The reversal of 21133333004 is 40033333112.

21133333004 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21133333003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377380919 + ... + 377380974.

It is an arithmetic number, because the mean of its divisors is an integer number (3522222172).

Almost surely, 2^21133333004 is an apocalyptic number.

It is an amenable number.

21133333004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21133333004 is a wasteful number, since it uses less digits than its factorization.

21133333004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754761904 (or 754761902 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21133333004 its reverse (40033333112), we get a palindrome (61166666116).

The spelling of 21133333004 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirty-three thousand, four".