21223060222 has 36 divisors (see below), whose sum is σ = 40099851576. Its totient is φ = 8395929360.

The previous prime is 21223060207. The next prime is 21223060223. The reversal of 21223060222 is 22206032212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21223060193 and 21223060202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223060223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 624154 + ... + 657277.

It is an arithmetic number, because the mean of its divisors is an integer number (1113884766).

Almost surely, 2^21223060222 is an apocalyptic number.

21223060222 is a deficient number, since it is larger than the sum of its proper divisors (18876791354).

21223060222 is a wasteful number, since it uses less digits than its factorization.

21223060222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281473 (or 1281453 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21223060222 its reverse (22206032212), we get a palindrome (43429092434).

The spelling of 21223060222 in words is "twenty-one billion, two hundred twenty-three million, sixty thousand, two hundred twenty-two".