21033110110 has 16 divisors (see below), whose sum is σ = 37861837776. Its totient is φ = 8412746368.

The previous prime is 21033110099. The next prime is 21033110191. The reversal of 21033110110 is 1101133012.

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, 149649 + ... + 253891.

It is an arithmetic number, because the mean of its divisors is an integer number (2366364861).

Almost surely, 2^21033110110 is an apocalyptic number.

21033110110 is a deficient number, since it is larger than the sum of its proper divisors (16828727666).

21033110110 is a wasteful number, since it uses less digits than its factorization.

21033110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124427.

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

Adding to 21033110110 its reverse (1101133012), we get a palindrome (22134243122).

The spelling of 21033110110 in words is "twenty-one billion, thirty-three million, one hundred ten thousand, one hundred ten".