20122222102220 has 192 divisors, whose sum is σ = 52985624186880. Its totient is φ = 6261932371968.

The previous prime is 20122222102183. The next prime is 20122222102289. The reversal of 20122222102220 is 2220122222102.

20122222102220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20122222102220² (a number of 27 digits) contains 22 as substring.

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 = 20122222102192 and 20122222102201.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6840422 + ... + 9329298.

It is an arithmetic number, because the mean of its divisors is an integer number (275966792640).

Almost surely, 2^{20122222102220} is an apocalyptic number.

20122222102220 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 20122222102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26492812093440).

20122222102220 is an abundant number, since it is smaller than the sum of its proper divisors (32863402084660).

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

20122222102220 is a wasteful number, since it uses less digits than its factorization.

20122222102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489032 (or 2489030 counting only the distinct ones).

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

Adding to 20122222102220 its reverse (2220122222102), we get a palindrome (22342344324322).

The spelling of 20122222102220 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty".