21112100110 has 8 divisors (see below), whose sum is σ = 38001780216. Its totient is φ = 8444840040.

The previous prime is 21112100101. The next prime is 21112100161. The reversal of 21112100110 is 1100121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2111210011 = 21112100110 / (2 + 1 + 1 + 1 + 2 + 1 + 0 + 0 + 1 + 1 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055604996 + ... + 1055605015.

It is an arithmetic number, because the mean of its divisors is an integer number (4750222527).

Almost surely, 2^21112100110 is an apocalyptic number.

21112100110 is a deficient number, since it is larger than the sum of its proper divisors (16889680106).

21112100110 is a wasteful number, since it uses less digits than its factorization.

21112100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111210018.

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

Adding to 21112100110 its reverse (1100121112), we get a palindrome (22212221222).

The spelling of 21112100110 in words is "twenty-one billion, one hundred twelve million, one hundred thousand, one hundred ten".