21022220110210 has 16 divisors (see below), whose sum is σ = 41279995852992. Its totient is φ = 7644443676400.

The previous prime is 21022220110189. The next prime is 21022220110217. The reversal of 21022220110210 is 1201102222012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21022220110217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95555545846 + ... + 95555546065.

It is an arithmetic number, because the mean of its divisors is an integer number (2579999740812).

Almost surely, 2^{21022220110210} is an apocalyptic number.

21022220110210 is a deficient number, since it is larger than the sum of its proper divisors (20257775742782).

21022220110210 is a wasteful number, since it uses less digits than its factorization.

21022220110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191111091929.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022220110210 its reverse (1201102222012), we get a palindrome (22223322332222).

The spelling of 21022220110210 in words is "twenty-one trillion, twenty-two billion, two hundred twenty million, one hundred ten thousand, two hundred ten".