22012122020220 has 144 divisors (see below), whose sum is σ = 67482836541120. Its totient is φ = 5807401463808.

The previous prime is 22012122020209. The next prime is 22012122020263. The reversal of 22012122020220 is 2202022121022.

22012122020220 is a `hidden beast` number, since 2 + 201 + 2 + 1 + 220 + 20 + 220 = 666.

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 = 22012122020193 and 22012122020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12370737 + ... + 14037783.

Almost surely, 2^{22012122020220} is an apocalyptic number.

22012122020220 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 22012122020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33741418270560).

22012122020220 is an abundant number, since it is smaller than the sum of its proper divisors (45470714520900).

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

22012122020220 is a wasteful number, since it uses less digits than its factorization.

22012122020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667844 (or 1667839 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22012122020220 its reverse (2202022121022), we get a palindrome (24214144141242).

The spelling of 22012122020220 in words is "twenty-two trillion, twelve billion, one hundred twenty-two million, twenty thousand, two hundred twenty".