222220120212020 has 96 divisors (see below), whose sum is σ = 538640005026816. Its totient is φ = 75431026368000.

The previous prime is 222220120212017. The next prime is 222220120212023. The reversal of 222220120212020 is 20212021022222.

It is an interprime number because it is at equal distance from previous prime (222220120212017) and next prime (222220120212023).

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 = 222220120211983 and 222220120212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220120212023) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 248148389 + ... + 249042291.

It is an arithmetic number, because the mean of its divisors is an integer number (5610833385696).

Almost surely, 2^{222220120212020} is an apocalyptic number.

222220120212020 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 222220120212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269320002513408).

222220120212020 is an abundant number, since it is smaller than the sum of its proper divisors (316419884814796).

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

222220120212020 is a wasteful number, since it uses less digits than its factorization.

222220120212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911601 (or 911599 counting only the distinct ones).

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

Adding to 222220120212020 its reverse (20212021022222), we get a palindrome (242432141234242).

The spelling of 222220120212020 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty million, two hundred twelve thousand, twenty".