220212221100 has 144 divisors (see below), whose sum is σ = 672515289600. Its totient is φ = 55480446720.

The previous prime is 220212221077. The next prime is 220212221149. The reversal of 220212221100 is 1122212022.

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 220212221100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2039266 + ... + 2144534.

Almost surely, 2^220212221100 is an apocalyptic number.

220212221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220212221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336257644800).

220212221100 is an abundant number, since it is smaller than the sum of its proper divisors (452303068500).

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

220212221100 is a wasteful number, since it uses less digits than its factorization.

220212221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105672 (or 105665 counting only the distinct ones).

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

Adding to 220212221100 its reverse (1122212022), we get a palindrome (221334433122).

It can be divided in two parts, 2202122 and 21100, that added together give a palindrome (2223222).

The spelling of 220212221100 in words is "two hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, one hundred".