22201021212220 has 48 divisors (see below), whose sum is σ = 46654094400480. Its totient is φ = 8874324856064.

The previous prime is 22201021212211. The next prime is 22201021212241. The reversal of 22201021212220 is 2221212010222.

It is a congruent 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, 181205622 + ... + 181328098.

It is an arithmetic number, because the mean of its divisors is an integer number (971960300010).

Almost surely, 2^{22201021212220} is an apocalyptic number.

22201021212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201021212220 is an abundant number, since it is smaller than the sum of its proper divisors (24453073188260).

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

22201021212220 is a wasteful number, since it uses less digits than its factorization.

22201021212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128622 (or 128620 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22201021212220 its reverse (2221212010222), we get a palindrome (24422233222442).

The spelling of 22201021212220 in words is "twenty-two trillion, two hundred one billion, twenty-one million, two hundred twelve thousand, two hundred twenty".