122003303220 has 120 divisors (see below), whose sum is σ = 385523223624. Its totient is φ = 32296679424.

The previous prime is 122003303183. The next prime is 122003303221. The reversal of 122003303220 is 22303300221.

It is a happy number.

122003303220 is a `hidden beast` number, since 12 + 2 + 0 + 0 + 330 + 322 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8194232484 + 113809070736 = 90522^2 + 337356^2 .

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 = 122003303193 and 122003303202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122003303221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52917 + ... + 496796.

Almost surely, 2^122003303220 is an apocalyptic number.

122003303220 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 122003303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192761611812).

122003303220 is an abundant number, since it is smaller than the sum of its proper divisors (263519920404).

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

122003303220 is a wasteful number, since it uses less digits than its factorization.

122003303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549871 (or 549860 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 122003303220 its reverse (22303300221), we get a palindrome (144306603441).

The spelling of 122003303220 in words is "one hundred twenty-two billion, three million, three hundred three thousand, two hundred twenty".