20220011220020 has 12 divisors (see below), whose sum is σ = 42462023562084. Its totient is φ = 8088004488000.

The previous prime is 20220011219971. The next prime is 20220011220029. The reversal of 20220011220020 is 2002211002202.

It can be written as a sum of positive squares in 2 ways, for example, as 5980391994256 + 14239619225764 = 2445484^2 + 3773542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20220011219977 and 20220011220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220011220029) 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, 505500280481 + ... + 505500280520.

It is an arithmetic number, because the mean of its divisors is an integer number (3538501963507).

Almost surely, 2^{20220011220020} is an apocalyptic number.

20220011220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220011220020 is an abundant number, since it is smaller than the sum of its proper divisors (22242012342064).

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

20220011220020 is a wasteful number, since it uses less digits than its factorization.

20220011220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011000561010 (or 1011000561008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20220011220020 its reverse (2002211002202), we get a palindrome (22222222222222).

The spelling of 20220011220020 in words is "twenty trillion, two hundred twenty billion, eleven million, two hundred twenty thousand, twenty".