2122201222220 has 48 divisors (see below), whose sum is σ = 4582167359616. Its totient is φ = 825120000000.

The previous prime is 2122201222213. The next prime is 2122201222223. The reversal of 2122201222220 is 222221022212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2122201222192 and 2122201222201.

It is not an unprimeable number, because it can be changed into a prime (2122201222223) 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, 4552781 + ... + 4997220.

It is an arithmetic number, because the mean of its divisors is an integer number (95461819992).

Almost surely, 2^{2122201222220} is an apocalyptic number.

2122201222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122201222220 is an abundant number, since it is smaller than the sum of its proper divisors (2459966137396).

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

2122201222220 is a wasteful number, since it uses less digits than its factorization.

2122201222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9550322 (or 9550320 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2122201222220 its reverse (222221022212), we get a palindrome (2344422244432).

The spelling of 2122201222220 in words is "two trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty".