212222120220220 has 48 divisors (see below), whose sum is σ = 486447113327616. Its totient is φ = 77129532648000.

The previous prime is 212222120220199. The next prime is 212222120220263. The reversal of 212222120220220 is 22022021222212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212222120220191 and 212222120220200.

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, 263017716 + ... + 263823355.

It is an arithmetic number, because the mean of its divisors is an integer number (10134314860992).

Almost surely, 2^{212222120220220} is an apocalyptic number.

212222120220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222120220220 is an abundant number, since it is smaller than the sum of its proper divisors (274224993107396).

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

212222120220220 is a wasteful number, since it uses less digits than its factorization.

212222120220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526842922 (or 526842920 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 212222120220220 its reverse (22022021222212), we get a palindrome (234244141442432).

The spelling of 212222120220220 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twenty thousand, two hundred twenty".