2102212100220 has 48 divisors (see below), whose sum is σ = 5888623587840. Its totient is φ = 560358492736.

The previous prime is 2102212100203. The next prime is 2102212100239. The reversal of 2102212100220 is 220012122012.

It is a super-2 number, since 2×2102212100220² (a number of 25 digits) contains 22 as substring.

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 2102212100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7084680 + ... + 7375439.

It is an arithmetic number, because the mean of its divisors is an integer number (122679658080).

Almost surely, 2^{2102212100220} is an apocalyptic number.

2102212100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102212100220 is an abundant number, since it is smaller than the sum of its proper divisors (3786411487620).

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

2102212100220 is a wasteful number, since it uses less digits than its factorization.

2102212100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14462554 (or 14462552 counting only the distinct ones).

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

Adding to 2102212100220 its reverse (220012122012), we get a palindrome (2322224222232).

The spelling of 2102212100220 in words is "two trillion, one hundred two billion, two hundred twelve million, one hundred thousand, two hundred twenty".