222120210020 has 12 divisors (see below), whose sum is σ = 466452441084. Its totient is φ = 88848084000.

The previous prime is 222120209989. The next prime is 222120210041. The reversal of 222120210020 is 20012021222.

It can be written as a sum of positive squares in 2 ways, for example, as 55466844196 + 166653365824 = 235514^2 + 408232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222120209977 and 222120210004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5553005231 + ... + 5553005270.

It is an arithmetic number, because the mean of its divisors is an integer number (38871036757).

Almost surely, 2^222120210020 is an apocalyptic number.

222120210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120210020 is an abundant number, since it is smaller than the sum of its proper divisors (244332231064).

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

222120210020 is a wasteful number, since it uses less digits than its factorization.

222120210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11106010510 (or 11106010508 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222120210020 its reverse (20012021222), we get a palindrome (242132231242).

The spelling of 222120210020 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, twenty".