222102212020 has 48 divisors (see below), whose sum is σ = 503035032528. Its totient is φ = 81885772800.

The previous prime is 222102211997. The next prime is 222102212021. The reversal of 222102212020 is 20212201222.

It can be written as a sum of positive squares in 8 ways, for example, as 199035664 + 221903176356 = 14108^2 + 471066^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222102211985 and 222102212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102212021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454881 + ... + 806920.

It is an arithmetic number, because the mean of its divisors is an integer number (10479896511).

Almost surely, 2^222102212020 is an apocalyptic number.

222102212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222102212020 is an abundant number, since it is smaller than the sum of its proper divisors (280932820508).

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

222102212020 is a wasteful number, since it uses less digits than its factorization.

222102212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262500 (or 1262498 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222102212020 its reverse (20212201222), we get a palindrome (242314413242).

The spelling of 222102212020 in words is "two hundred twenty-two billion, one hundred two million, two hundred twelve thousand, twenty".