21222042430006 has 16 divisors (see below), whose sum is σ = 34845500643408. Its totient is φ = 9613460111200.

The previous prime is 21222042429953. The next prime is 21222042430009. The reversal of 21222042430006 is 60003424022212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222042430009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1646133985 + ... + 1646146876.

It is an arithmetic number, because the mean of its divisors is an integer number (2177843790213).

Almost surely, 2^{21222042430006} is an apocalyptic number.

21222042430006 is a deficient number, since it is larger than the sum of its proper divisors (13623458213402).

21222042430006 is a wasteful number, since it uses less digits than its factorization.

21222042430006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292281167.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21222042430006 its reverse (60003424022212), we get a palindrome (81225466452218).

The spelling of 21222042430006 in words is "twenty-one trillion, two hundred twenty-two billion, forty-two million, four hundred thirty thousand, six".