21033130310 has 16 divisors (see below), whose sum is σ = 38029412736. Its totient is φ = 8375523648.

The previous prime is 21033130271. The next prime is 21033130319. The reversal of 21033130310 is 1303133012.

It is a super-2 number, since 2×21033130310² (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 (21033130319) 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, 4713719 + ... + 4718178.

It is an arithmetic number, because the mean of its divisors is an integer number (2376838296).

Almost surely, 2^21033130310 is an apocalyptic number.

21033130310 is a deficient number, since it is larger than the sum of its proper divisors (16996282426).

21033130310 is a wasteful number, since it uses less digits than its factorization.

21033130310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9432127.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21033130310 its reverse (1303133012), we get a palindrome (22336263322).

The spelling of 21033130310 in words is "twenty-one billion, thirty-three million, one hundred thirty thousand, three hundred ten".