21003320110 has 16 divisors (see below), whose sum is σ = 38338456032. Its totient is φ = 8282999200.

The previous prime is 21003320027. The next prime is 21003320147. The reversal of 21003320110 is 1102330012.

It is a super-2 number, since 2×21003320110² (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, 14790361 + ... + 14791780.

It is an arithmetic number, because the mean of its divisors is an integer number (2396153502).

Almost surely, 2^21003320110 is an apocalyptic number.

21003320110 is a deficient number, since it is larger than the sum of its proper divisors (17335135922).

21003320110 is a wasteful number, since it uses less digits than its factorization.

21003320110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29582219.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21003320110 its reverse (1102330012), we get a palindrome (22105650122).

The spelling of 21003320110 in words is "twenty-one billion, three million, three hundred twenty thousand, one hundred ten".