2100221221110 has 64 divisors (see below), whose sum is σ = 5093863372800. Its totient is φ = 554163023232.

The previous prime is 2100221221103. The next prime is 2100221221121. The reversal of 2100221221110 is 111221220012.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100221221110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192831 + ... + 2058549.

It is an arithmetic number, because the mean of its divisors is an integer number (79591615200).

Almost surely, 2^{2100221221110} is an apocalyptic number.

2100221221110 is an abundant number, since it is smaller than the sum of its proper divisors (2993642151690).

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

2100221221110 is a wasteful number, since it uses less digits than its factorization.

2100221221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866125.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2100221221110 its reverse (111221220012), we get a palindrome (2211442441122).

The spelling of 2100221221110 in words is "two trillion, one hundred billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".