2012221221100 has 36 divisors (see below), whose sum is σ = 4366611116224. Its totient is φ = 804871702080.

The previous prime is 2012221221097. The next prime is 2012221221133. The reversal of 2012221221100 is 11221222102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5339077 + ... + 5703523.

Almost surely, 2^{2012221221100} is an apocalyptic number.

2012221221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012221221100 is an abundant number, since it is smaller than the sum of its proper divisors (2354389895124).

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

2012221221100 is a wasteful number, since it uses less digits than its factorization.

2012221221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419674 (or 419667 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012221221100 its reverse (11221222102), we get a palindrome (2023442443202).

The spelling of 2012221221100 in words is "two trillion, twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred".