2122212200220 has 288 divisors, whose sum is σ = 7697015359488. Its totient is φ = 480783485952.

The previous prime is 2122212200197. The next prime is 2122212200309. The reversal of 2122212200220 is 220022122212.

2122212200220 is a `hidden beast` number, since 2 + 1 + 2 + 221 + 220 + 0 + 220 = 666.

It is a super-2 number, since 2×2122212200220² (a number of 25 digits) contains 22 as substring.

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 = 2122212200193 and 2122212200202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3568237 + ... + 4120283.

It is an arithmetic number, because the mean of its divisors is an integer number (26725747776).

Almost surely, 2^{2122212200220} is an apocalyptic number.

2122212200220 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 2122212200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3848507679744).

2122212200220 is an abundant number, since it is smaller than the sum of its proper divisors (5574803159268).

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

2122212200220 is a wasteful number, since it uses less digits than its factorization.

2122212200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552191 (or 552177 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2122212200220 its reverse (220022122212), we get a palindrome (2342234322432).

The spelling of 2122212200220 in words is "two trillion, one hundred twenty-two billion, two hundred twelve million, two hundred thousand, two hundred twenty".