22221202320 has 120 divisors (see below), whose sum is σ = 75395783736. Its totient is φ = 5864546304.

The previous prime is 22221202291. The next prime is 22221202403. The reversal of 22221202320 is 2320212222.

22221202320 is a `hidden beast` number, since 2 + 222 + 120 + 2 + 320 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 449609616 + 21771592704 = 21204^2 + 147552^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22221202293 and 22221202302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89247 + ... + 228926.

Almost surely, 2^22221202320 is an apocalyptic number.

22221202320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221202320 is an abundant number, since it is smaller than the sum of its proper divisors (53174581416).

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

22221202320 is a wasteful number, since it uses less digits than its factorization.

22221202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318289 (or 318280 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22221202320 its reverse (2320212222), we get a palindrome (24541414542).

The spelling of 22221202320 in words is "twenty-two billion, two hundred twenty-one million, two hundred two thousand, three hundred twenty".