2100222002220 has 24 divisors (see below), whose sum is σ = 5880621606384. Its totient is φ = 560059200576.

The previous prime is 2100222002213. The next prime is 2100222002233. The reversal of 2100222002220 is 222002220012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2100222002220.

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 7 ways as a sum of consecutive naturals, for example, 17501849959 + ... + 17501850078.

It is an arithmetic number, because the mean of its divisors is an integer number (245025900266).

Almost surely, 2^{2100222002220} is an apocalyptic number.

2100222002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100222002220 is an abundant number, since it is smaller than the sum of its proper divisors (3780399604164).

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

2100222002220 is a wasteful number, since it uses less digits than its factorization.

2100222002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35003700049 (or 35003700047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2100222002220 its reverse (222002220012), we get a palindrome (2322224222232).

The spelling of 2100222002220 in words is "two trillion, one hundred billion, two hundred twenty-two million, two thousand, two hundred twenty".