21310033310 has 64 divisors (see below), whose sum is σ = 40518745344. Its totient is φ = 8059833600.

The previous prime is 21310033309. The next prime is 21310033313. The reversal of 21310033310 is 1333001312.

It is a super-2 number, since 2×21310033310² (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 (21310033313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2304917 + ... + 2314143.

It is an arithmetic number, because the mean of its divisors is an integer number (633105396).

Almost surely, 2^21310033310 is an apocalyptic number.

21310033310 is a deficient number, since it is larger than the sum of its proper divisors (19208712034).

21310033310 is a wasteful number, since it uses less digits than its factorization.

21310033310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449.

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

Adding to 21310033310 its reverse (1333001312), we get a palindrome (22643034622).

The spelling of 21310033310 in words is "twenty-one billion, three hundred ten million, thirty-three thousand, three hundred ten".