2012200111220 has 48 divisors (see below), whose sum is σ = 4550773030608. Its totient is φ = 742949038080.

The previous prime is 2012200111219. The next prime is 2012200111231. The reversal of 2012200111220 is 221110022102.

It can be written as a sum of positive squares in 8 ways, for example, as 1066898936464 + 945301174756 = 1032908^2 + 972266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2012200111195 and 2012200111204.

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 15 ways as a sum of consecutive naturals, for example, 19104542 + ... + 19209578.

It is an arithmetic number, because the mean of its divisors is an integer number (94807771471).

Almost surely, 2^{2012200111220} is an apocalyptic number.

2012200111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012200111220 is an abundant number, since it is smaller than the sum of its proper divisors (2538572919388).

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

2012200111220 is a wasteful number, since it uses less digits than its factorization.

2012200111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178740 (or 178738 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2012200111220 its reverse (221110022102), we get a palindrome (2233310133322).

The spelling of 2012200111220 in words is "two trillion, twelve billion, two hundred million, one hundred eleven thousand, two hundred twenty".