22220012021020 has 96 divisors (see below), whose sum is σ = 51416712216576. Its totient is φ = 7998652896000.

The previous prime is 22220012020993. The next prime is 22220012021023. The reversal of 22220012021020 is 2012021002222.

It is a junction number, because it is equal to n+sod(n) for n = 22220012020985 and 22220012021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220012021023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136416067 + ... + 136578853.

It is an arithmetic number, because the mean of its divisors is an integer number (535590752256).

Almost surely, 2^{22220012021020} is an apocalyptic number.

22220012021020 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 22220012021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25708356108288).

22220012021020 is an abundant number, since it is smaller than the sum of its proper divisors (29196700195556).

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

22220012021020 is a wasteful number, since it uses less digits than its factorization.

22220012021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169051 (or 169049 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22220012021020 its reverse (2012021002222), we get a palindrome (24232033023242).

It can be divided in two parts, 2222001202 and 1020, that added together give a palindrome (2222002222).

The spelling of 22220012021020 in words is "twenty-two trillion, two hundred twenty billion, twelve million, twenty-one thousand, twenty".