21011103310 has 32 divisors (see below), whose sum is σ = 37967657472. Its totient is φ = 8371677600.

The previous prime is 21011103299. The next prime is 21011103331. The reversal of 21011103310 is 1330111012.

It is a super-2 number, since 2×21011103310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4241335 + ... + 4246285.

It is an arithmetic number, because the mean of its divisors is an integer number (1186489296).

Almost surely, 2^21011103310 is an apocalyptic number.

21011103310 is a deficient number, since it is larger than the sum of its proper divisors (16956554162).

21011103310 is a wasteful number, since it uses less digits than its factorization.

21011103310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21011103310 its reverse (1330111012), we get a palindrome (22341214322).

The spelling of 21011103310 in words is "twenty-one billion, eleven million, one hundred three thousand, three hundred ten".