2212101001220 has 48 divisors (see below), whose sum is σ = 5163339722688. Its totient is φ = 789222994560.

The previous prime is 2212101001207. The next prime is 2212101001307. The reversal of 2212101001220 is 221001012122.

It is a junction number, because it is equal to n+sod(n) for n = 2212101001195 and 2212101001204.

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, 94846874 + ... + 94870193.

It is an arithmetic number, because the mean of its divisors is an integer number (107569577556).

Almost surely, 2^{2212101001220} is an apocalyptic number.

2212101001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212101001220 is an abundant number, since it is smaller than the sum of its proper divisors (2951238721468).

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

2212101001220 is a wasteful number, since it uses less digits than its factorization.

2212101001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189717140 (or 189717138 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2212101001220 its reverse (221001012122), we get a palindrome (2433102013342).

The spelling of 2212101001220 in words is "two trillion, two hundred twelve billion, one hundred one million, one thousand, two hundred twenty".