1220200011020 has 12 divisors (see below), whose sum is σ = 2562420023184. Its totient is φ = 488080004400.

The previous prime is 1220200011013. The next prime is 1220200011071. The reversal of 1220200011020 is 201100020221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220200010992 and 1220200011010.

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, 30505000256 + ... + 30505000295.

It is an arithmetic number, because the mean of its divisors is an integer number (213535001932).

Almost surely, 2^{1220200011020} is an apocalyptic number.

1220200011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220200011020 is an abundant number, since it is smaller than the sum of its proper divisors (1342220012164).

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

1220200011020 is a wasteful number, since it uses less digits than its factorization.

1220200011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61010000560 (or 61010000558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220200011020 its reverse (201100020221), we get a palindrome (1421300031241).

The spelling of 1220200011020 in words is "one trillion, two hundred twenty billion, two hundred million, eleven thousand, twenty".