20222222210020 has 12 divisors (see below), whose sum is σ = 42466666641084. Its totient is φ = 8088888884000.

The previous prime is 20222222210011. The next prime is 20222222210027. The reversal of 20222222210020 is 2001222222202.

It can be written as a sum of positive squares in 2 ways, for example, as 3735568948644 + 16486653261376 = 1932762^2 + 4060376^2 .

It is a super-2 number, since 2×20222222210020² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20222222210020.

It is not an unprimeable number, because it can be changed into a prime (20222222210027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505555555231 + ... + 505555555270.

It is an arithmetic number, because the mean of its divisors is an integer number (3538888886757).

Almost surely, 2^{20222222210020} is an apocalyptic number.

20222222210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222222210020 is an abundant number, since it is smaller than the sum of its proper divisors (22244444431064).

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

20222222210020 is a wasteful number, since it uses less digits than its factorization.

20222222210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011111110510 (or 1011111110508 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20222222210020 its reverse (2001222222202), we get a palindrome (22223444432222).

The spelling of 20222222210020 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred ten thousand, twenty".