21101102110 has 64 divisors (see below), whose sum is σ = 41919171840. Its totient is φ = 7583950080.

The previous prime is 21101102051. The next prime is 21101102173. The reversal of 21101102110 is 1120110112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3559609 + ... + 3565531.

It is an arithmetic number, because the mean of its divisors is an integer number (654987060).

Almost surely, 2^21101102110 is an apocalyptic number.

21101102110 is a deficient number, since it is larger than the sum of its proper divisors (20818069730).

21101102110 is a wasteful number, since it uses less digits than its factorization.

21101102110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21101102110 its reverse (1120110112), we get a palindrome (22221212222).

The spelling of 21101102110 in words is "twenty-one billion, one hundred one million, one hundred two thousand, one hundred ten".