21223431121110 has 16 divisors (see below), whose sum is σ = 50936234690736. Its totient is φ = 5659581632288.

The previous prime is 21223431121069. The next prime is 21223431121127. The reversal of 21223431121110 is 1112113432212.

It is a congruent number.

It is an unprimeable number.

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, 353723851989 + ... + 353723852048.

It is an arithmetic number, because the mean of its divisors is an integer number (3183514668171).

Almost surely, 2^{21223431121110} is an apocalyptic number.

21223431121110 is an abundant number, since it is smaller than the sum of its proper divisors (29712803569626).

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

21223431121110 is a wasteful number, since it uses less digits than its factorization.

21223431121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707447704047.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 21223431121110 its reverse (1112113432212), we get a palindrome (22335544553322).

The spelling of 21223431121110 in words is "twenty-one trillion, two hundred twenty-three billion, four hundred thirty-one million, one hundred twenty-one thousand, one hundred ten".