21103303310 has 16 divisors (see below), whose sum is σ = 38017180656. Its totient is φ = 8434380288.

The previous prime is 21103303303. The next prime is 21103303357. The reversal of 21103303310 is 1330330112.

It is a super-2 number, since 2×21103303310² (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 7 ways as a sum of consecutive naturals, for example, 854852 + ... + 879191.

It is an arithmetic number, because the mean of its divisors is an integer number (2376073791).

Almost surely, 2^21103303310 is an apocalyptic number.

21103303310 is a deficient number, since it is larger than the sum of its proper divisors (16913877346).

21103303310 is a wasteful number, since it uses less digits than its factorization.

21103303310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735267.

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

Adding to 21103303310 its reverse (1330330112), we get a palindrome (22433633422).

The spelling of 21103303310 in words is "twenty-one billion, one hundred three million, three hundred three thousand, three hundred ten".