21310011110 has 16 divisors (see below), whose sum is σ = 38364084000. Its totient is φ = 8522656896.

The previous prime is 21310011091. The next prime is 21310011157. The reversal of 21310011110 is 1111001312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21310011091 and 21310011100.

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, 100730 + ... + 229709.

It is an arithmetic number, because the mean of its divisors is an integer number (2397755250).

Almost surely, 2^21310011110 is an apocalyptic number.

21310011110 is a deficient number, since it is larger than the sum of its proper divisors (17054072890).

21310011110 is a wasteful number, since it uses less digits than its factorization.

21310011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336895.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 21310011110 its reverse (1111001312), we get a palindrome (22421012422).

The spelling of 21310011110 in words is "twenty-one billion, three hundred ten million, eleven thousand, one hundred ten".