21222465622 has 16 divisors (see below), whose sum is σ = 32188198752. Its totient is φ = 10493323200.

The previous prime is 21222465619. The next prime is 21222465623. The reversal of 21222465622 is 22656422212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222465623) 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, 102418 + ... + 230074.

It is an arithmetic number, because the mean of its divisors is an integer number (2011762422).

Almost surely, 2^21222465622 is an apocalyptic number.

21222465622 is a deficient number, since it is larger than the sum of its proper divisors (10965733130).

21222465622 is a wasteful number, since it uses less digits than its factorization.

21222465622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128583.

The product of its digits is 46080, while the sum is 34.

Adding to 21222465622 its reverse (22656422212), we get a palindrome (43878887834).

The spelling of 21222465622 in words is "twenty-one billion, two hundred twenty-two million, four hundred sixty-five thousand, six hundred twenty-two".