22202221221220 has 48 divisors (see below), whose sum is σ = 48869993733120. Its totient is φ = 8456669755776.

The previous prime is 22202221221181. The next prime is 22202221221277. The reversal of 22202221221220 is 2212212220222.

It is a junction number, because it is equal to n+sod(n) for n = 22202221221191 and 22202221221200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108116475 + ... + 108321634.

It is an arithmetic number, because the mean of its divisors is an integer number (1018124869440).

Almost surely, 2^{22202221221220} is an apocalyptic number.

22202221221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22202221221220 is an abundant number, since it is smaller than the sum of its proper divisors (26667772511900).

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

22202221221220 is a wasteful number, since it uses less digits than its factorization.

22202221221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216438364 (or 216438362 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22202221221220 its reverse (2212212220222), we get a palindrome (24414433441442).

The spelling of 22202221221220 in words is "twenty-two trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty".