122223220020 has 144 divisors (see below), whose sum is σ = 404675526528. Its totient is φ = 29613185280.

The previous prime is 122223220019. The next prime is 122223220039. The reversal of 122223220020 is 20022322221.

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 = 122223219975 and 122223220002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3700017 + ... + 3732903.

It is an arithmetic number, because the mean of its divisors is an integer number (2810246712).

Almost surely, 2^122223220020 is an apocalyptic number.

122223220020 is a gapful number since it is divisible by the number (10) 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 122223220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202337763264).

122223220020 is an abundant number, since it is smaller than the sum of its proper divisors (282452306508).

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

122223220020 is a wasteful number, since it uses less digits than its factorization.

122223220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34790 (or 34785 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 122223220020 its reverse (20022322221), we get a palindrome (142245542241).

It can be divided in two parts, 122223 and 220020, that added together give a palindrome (342243).

The spelling of 122223220020 in words is "one hundred twenty-two billion, two hundred twenty-three million, two hundred twenty thousand, twenty".