21204030310 has 8 divisors (see below), whose sum is σ = 38167254576. Its totient is φ = 8481612120.

The previous prime is 21204030301. The next prime is 21204030319. The reversal of 21204030310 is 1303040212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21204030301) and next prime (21204030319).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21204030310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21204030319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060201506 + ... + 1060201525.

It is an arithmetic number, because the mean of its divisors is an integer number (4770906822).

Almost surely, 2^21204030310 is an apocalyptic number.

21204030310 is a deficient number, since it is larger than the sum of its proper divisors (16963224266).

21204030310 is a wasteful number, since it uses less digits than its factorization.

21204030310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120403038.

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

Adding to 21204030310 its reverse (1303040212), we get a palindrome (22507070522).

The spelling of 21204030310 in words is "twenty-one billion, two hundred four million, thirty thousand, three hundred ten".