21004314213 has 16 divisors (see below), whose sum is σ = 29906035200. Its totient is φ = 13083887040.

The previous prime is 21004314203. The next prime is 21004314239. The reversal of 21004314213 is 31241340012.

It is not a de Polignac number, because 21004314213 - 2⁴ = 21004314197 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21004314213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21004314203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3891318 + ... + 3896711.

It is an arithmetic number, because the mean of its divisors is an integer number (1869127200).

Almost surely, 2^21004314213 is an apocalyptic number.

It is an amenable number.

21004314213 is a deficient number, since it is larger than the sum of its proper divisors (8901720987).

21004314213 is a wasteful number, since it uses less digits than its factorization.

21004314213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7788092.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21004314213 its reverse (31241340012), we get a palindrome (52245654225).

The spelling of 21004314213 in words is "twenty-one billion, four million, three hundred fourteen thousand, two hundred thirteen".