22122201001220 has 48 divisors (see below), whose sum is σ = 48494163691008. Its totient is φ = 8461058010240.

The previous prime is 22122201001193. The next prime is 22122201001319. The reversal of 22122201001220 is 2210010222122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7511804 + ... + 10033523.

It is an arithmetic number, because the mean of its divisors is an integer number (1010295076896).

Almost surely, 2^{22122201001220} is an apocalyptic number.

22122201001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122201001220 is an abundant number, since it is smaller than the sum of its proper divisors (26371962689788).

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

22122201001220 is a wasteful number, since it uses less digits than its factorization.

22122201001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17548100 (or 17548098 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22122201001220 its reverse (2210010222122), we get a palindrome (24332211223342).

The spelling of 22122201001220 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred one million, one thousand, two hundred twenty".