2101100002220 has 48 divisors (see below), whose sum is σ = 4434548580000. Its totient is φ = 836209006080.

The previous prime is 2101100002189. The next prime is 2101100002241. The reversal of 2101100002220 is 222000011012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6712400 + ... + 7018440.

It is an arithmetic number, because the mean of its divisors is an integer number (92386428750).

Almost surely, 2^{2101100002220} is an apocalyptic number.

2101100002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101100002220 is an abundant number, since it is smaller than the sum of its proper divisors (2333448577780).

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

2101100002220 is a wasteful number, since it uses less digits than its factorization.

2101100002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307778 (or 307776 counting only the distinct ones).

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

Adding to 2101100002220 its reverse (222000011012), we get a palindrome (2323100013232).

The spelling of 2101100002220 in words is "two trillion, one hundred one billion, one hundred million, two thousand, two hundred twenty".