122020221220 has 12 divisors (see below), whose sum is σ = 256242464604. Its totient is φ = 48808088480.

The previous prime is 122020221217. The next prime is 122020221251. The reversal of 122020221220 is 22122020221.

It can be written as a sum of positive squares in 2 ways, for example, as 47220159204 + 74800062016 = 217302^2 + 273496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122020221194 and 122020221203.

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 3 ways as a sum of consecutive naturals, for example, 3050505511 + ... + 3050505550.

It is an arithmetic number, because the mean of its divisors is an integer number (21353538717).

Almost surely, 2^122020221220 is an apocalyptic number.

122020221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122020221220 is an abundant number, since it is smaller than the sum of its proper divisors (134222243384).

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

122020221220 is a wasteful number, since it uses less digits than its factorization.

122020221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101011070 (or 6101011068 counting only the distinct ones).

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

Adding to 122020221220 its reverse (22122020221), we get a palindrome (144142241441).

The spelling of 122020221220 in words is "one hundred twenty-two billion, twenty million, two hundred twenty-one thousand, two hundred twenty".