2100220122210 has 128 divisors (see below), whose sum is σ = 6100701235200. Its totient is φ = 451720326144.

The previous prime is 2100220122151. The next prime is 2100220122269. The reversal of 2100220122210 is 122210220012.

It is an interprime number because it is at equal distance from previous prime (2100220122151) and next prime (2100220122269).

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 2100220122210.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18317641 + ... + 18431939.

It is an arithmetic number, because the mean of its divisors is an integer number (47661728400).

Almost surely, 2^{2100220122210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100220122210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3050350617600).

2100220122210 is an abundant number, since it is smaller than the sum of its proper divisors (4000481112990).

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

2100220122210 is a wasteful number, since it uses less digits than its factorization.

2100220122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119480.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2100220122210 its reverse (122210220012), we get a palindrome (2222430342222).

The spelling of 2100220122210 in words is "two trillion, one hundred billion, two hundred twenty million, one hundred twenty-two thousand, two hundred ten".