21101202110 has 32 divisors (see below), whose sum is σ = 39675562560. Its totient is φ = 8064947968.

The previous prime is 21101202103. The next prime is 21101202113. The reversal of 21101202110 is 1120210112.

21101202110 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21101202091 and 21101202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101202113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171056 + ... + 267324.

It is an arithmetic number, because the mean of its divisors is an integer number (1239861330).

Almost surely, 2^21101202110 is an apocalyptic number.

21101202110 is a deficient number, since it is larger than the sum of its proper divisors (18574360450).

21101202110 is a wasteful number, since it uses less digits than its factorization.

21101202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97252.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21101202110 its reverse (1120210112), we get a palindrome (22221412222).

The spelling of 21101202110 in words is "twenty-one billion, one hundred one million, two hundred two thousand, one hundred ten".