21201200110 has 8 divisors (see below), whose sum is σ = 38162160216. Its totient is φ = 8480480040.

The previous prime is 21201200093. The next prime is 21201200113. The reversal of 21201200110 is 1100210212.

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

It is a super-2 number, since 2×21201200110² (a number of 21 digits) contains 22 as substring.

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: 2120120011 = 21201200110 / (2 + 1 + 2 + 0 + 1 + 2 + 0 + 0 + 1 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201200113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060059996 + ... + 1060060015.

It is an arithmetic number, because the mean of its divisors is an integer number (4770270027).

Almost surely, 2^21201200110 is an apocalyptic number.

21201200110 is a deficient number, since it is larger than the sum of its proper divisors (16960960106).

21201200110 is a wasteful number, since it uses less digits than its factorization.

21201200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120120018.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21201200110 its reverse (1100210212), we get a palindrome (22301410322).

The spelling of 21201200110 in words is "twenty-one billion, two hundred one million, two hundred thousand, one hundred ten".