21223130110 has 32 divisors (see below), whose sum is σ = 47017397952. Its totient is φ = 6716770560.

The previous prime is 21223130003. The next prime is 21223130111. The reversal of 21223130110 is 1103132212.

It is a super-2 number, since 2×21223130110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223130111) 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 15 ways as a sum of consecutive naturals, for example, 11660151 + ... + 11661970.

It is an arithmetic number, because the mean of its divisors is an integer number (1469293686).

Almost surely, 2^21223130110 is an apocalyptic number.

21223130110 is an abundant number, since it is smaller than the sum of its proper divisors (25794267842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21223130110 is a wasteful number, since it uses less digits than its factorization.

21223130110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23322148.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21223130110 its reverse (1103132212), we get a palindrome (22326262322).

The spelling of 21223130110 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirty thousand, one hundred ten".