2011221010220 has 48 divisors (see below), whose sum is σ = 4446069384960. Its totient is φ = 762110495424.

The previous prime is 2011221010207. The next prime is 2011221010291. The reversal of 2011221010220 is 220101221102.

It is a junction number, because it is equal to n+sod(n) for n = 2011221010195 and 2011221010204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8635337 + ... + 8865183.

It is an arithmetic number, because the mean of its divisors is an integer number (92626445520).

Almost surely, 2^{2011221010220} is an apocalyptic number.

2011221010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011221010220 is an abundant number, since it is smaller than the sum of its proper divisors (2434848374740).

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

2011221010220 is a wasteful number, since it uses less digits than its factorization.

2011221010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252902 (or 252900 counting only the distinct ones).

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

Adding to 2011221010220 its reverse (220101221102), we get a palindrome (2231322231322).

The spelling of 2011221010220 in words is "two trillion, eleven billion, two hundred twenty-one million, ten thousand, two hundred twenty".