2212101212220 has 72 divisors (see below), whose sum is σ = 6926493275520. Its totient is φ = 570864827520.

The previous prime is 2212101212207. The next prime is 2212101212311. The reversal of 2212101212220 is 222121012122.

It is a happy number.

2212101212220 is a `hidden beast` number, since 2 + 21 + 210 + 1 + 212 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2212101212193 and 2212101212202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198211375 + ... + 198222534.

Almost surely, 2^{2212101212220} is an apocalyptic number.

2212101212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212101212220 is an abundant number, since it is smaller than the sum of its proper divisors (4714392063300).

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

2212101212220 is a wasteful number, since it uses less digits than its factorization.

2212101212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396433955 (or 396433950 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212101212220 its reverse (222121012122), we get a palindrome (2434222224342).

The spelling of 2212101212220 in words is "two trillion, two hundred twelve billion, one hundred one million, two hundred twelve thousand, two hundred twenty".