22021224225 has 192 divisors, whose sum is σ = 49064859648. Its totient is φ = 8416512000.

The previous prime is 22021224163. The next prime is 22021224287. The reversal of 22021224225 is 52242212022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22021224163) and next prime (22021224287).

It is not a de Polignac number, because 22021224225 - 2¹¹ = 22021222177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021224195 and 22021224204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 39113794 + ... + 39114356.

It is an arithmetic number, because the mean of its divisors is an integer number (255546144).

Almost surely, 2^22021224225 is an apocalyptic number.

22021224225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22021224225 is an abundant number, since it is smaller than the sum of its proper divisors (27043635423).

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

22021224225 is a wasteful number, since it uses less digits than its factorization.

22021224225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 22021224225 its reverse (52242212022), we get a palindrome (74263436247).

The spelling of 22021224225 in words is "twenty-two billion, twenty-one million, two hundred twenty-four thousand, two hundred twenty-five".