2122201022220 has 144 divisors (see below), whose sum is σ = 6676528884480. Its totient is φ = 565855367616.

The previous prime is 2122201022219. The next prime is 2122201022231. The reversal of 2122201022220 is 222201022212.

2122201022220 is a `hidden beast` number, since 212 + 220 + 10 + 2 + 2 + 220 = 666.

It is a super-2 number, since 2×2122201022220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2122201022193 and 2122201022202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54621561 + ... + 54660399.

It is an arithmetic number, because the mean of its divisors is an integer number (46364783920).

Almost surely, 2^{2122201022220} is an apocalyptic number.

2122201022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122201022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3338264442240).

2122201022220 is an abundant number, since it is smaller than the sum of its proper divisors (4554327862260).

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

2122201022220 is a wasteful number, since it uses less digits than its factorization.

2122201022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50106 (or 50092 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2122201022220 its reverse (222201022212), we get a palindrome (2344402044432).

The spelling of 2122201022220 in words is "two trillion, one hundred twenty-two billion, two hundred one million, twenty-two thousand, two hundred twenty".