2220312022020 has 144 divisors (see below), whose sum is σ = 6806161737648. Its totient is φ = 585825730560.

The previous prime is 2220312022013. The next prime is 2220312022021. The reversal of 2220312022020 is 202202130222.

It can be written as a sum of positive squares in 8 ways, for example, as 736471044 + 2219575550976 = 27138^2 + 1489824^2 .

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 = 2220312021984 and 2220312022002.

It is not an unprimeable number, because it can be changed into a prime (2220312022021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76757160 + ... + 76786080.

It is an arithmetic number, because the mean of its divisors is an integer number (47265012067).

Almost surely, 2^{2220312022020} is an apocalyptic number.

2220312022020 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 2220312022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3403080868824).

2220312022020 is an abundant number, since it is smaller than the sum of its proper divisors (4585849715628).

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

2220312022020 is a wasteful number, since it uses less digits than its factorization.

2220312022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33430 (or 33425 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 2220312022020 its reverse (202202130222), we get a palindrome (2422514152242).

The spelling of 2220312022020 in words is "two trillion, two hundred twenty billion, three hundred twelve million, twenty-two thousand, twenty".