2100100000220 has 12 divisors (see below), whose sum is σ = 4410210000504. Its totient is φ = 840040000080.

The previous prime is 2100100000199. The next prime is 2100100000247. The reversal of 2100100000220 is 220000010012.

It is a junction number, because it is equal to n+sod(n) for n = 2100100000198 and 2100100000207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52502499986 + ... + 52502500025.

It is an arithmetic number, because the mean of its divisors is an integer number (367517500042).

Almost surely, 2^{2100100000220} is an apocalyptic number.

2100100000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100100000220 is an abundant number, since it is smaller than the sum of its proper divisors (2310110000284).

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

2100100000220 is a wasteful number, since it uses less digits than its factorization.

2100100000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105005000020 (or 105005000018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 2100100000220 its reverse (220000010012), we get a palindrome (2320100010232).

The spelling of 2100100000220 in words is "two trillion, one hundred billion, one hundred million, two hundred twenty", and thus it is an aban number.