21301020110 has 16 divisors (see below), whose sum is σ = 38369268000. Its totient is φ = 8514312096.

The previous prime is 21301020109. The next prime is 21301020119. The reversal of 21301020110 is 1102010312.

It is a junction number, because it is equal to n+sod(n) for n = 21301020091 and 21301020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301020119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747305 + ... + 775284.

It is an arithmetic number, because the mean of its divisors is an integer number (2398079250).

Almost surely, 2^21301020110 is an apocalyptic number.

21301020110 is a deficient number, since it is larger than the sum of its proper divisors (17068247890).

21301020110 is a wasteful number, since it uses less digits than its factorization.

21301020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523995.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21301020110 its reverse (1102010312), we get a palindrome (22403030422).

The spelling of 21301020110 in words is "twenty-one billion, three hundred one million, twenty thousand, one hundred ten".