22201020201220 has 48 divisors (see below), whose sum is σ = 53393685488640. Its totient is φ = 7595887353984.

The previous prime is 22201020201197. The next prime is 22201020201223. The reversal of 22201020201220 is 2210202010222.

It is a junction number, because it is equal to n+sod(n) for n = 22201020201194 and 22201020201203.

It is not an unprimeable number, because it can be changed into a prime (22201020201223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165463959 + ... + 165598078.

It is an arithmetic number, because the mean of its divisors is an integer number (1112368447680).

Almost surely, 2^{22201020201220} is an apocalyptic number.

22201020201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201020201220 is an abundant number, since it is smaller than the sum of its proper divisors (31192665287420).

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

22201020201220 is a wasteful number, since it uses less digits than its factorization.

22201020201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331062532 (or 331062530 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22201020201220 its reverse (2210202010222), we get a palindrome (24411222211442).

The spelling of 22201020201220 in words is "twenty-two trillion, two hundred one billion, twenty million, two hundred one thousand, two hundred twenty".