1220122120220 has 24 divisors (see below), whose sum is σ = 2580689958000. Its totient is φ = 484537704192.

The previous prime is 1220122120199. The next prime is 1220122120241. The reversal of 1220122120220 is 220212210221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220122120199) and next prime (1220122120241).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219443645 + ... + 219449204.

It is an arithmetic number, because the mean of its divisors is an integer number (107528748250).

Almost surely, 2^{1220122120220} is an apocalyptic number.

1220122120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220122120220 is an abundant number, since it is smaller than the sum of its proper divisors (1360567837780).

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

1220122120220 is a wasteful number, since it uses less digits than its factorization.

1220122120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438892997 (or 438892995 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220122120220 its reverse (220212210221), we get a palindrome (1440334330441).

Subtracting from 1220122120220 its reverse (220212210221), we obtain a palindrome (999909909999).

The spelling of 1220122120220 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty".