222120222111020 has 24 divisors (see below), whose sum is σ = 466498336903200. Its totient is φ = 88839351612032.

The previous prime is 222120222111019. The next prime is 222120222111071. The reversal of 222120222111020 is 20111222021222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222120222110983 and 222120222111001.

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 7 ways as a sum of consecutive naturals, for example, 545868560 + ... + 546275319.

It is an arithmetic number, because the mean of its divisors is an integer number (19437430704300).

Almost surely, 2^{222120222111020} is an apocalyptic number.

222120222111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120222111020 is an abundant number, since it is smaller than the sum of its proper divisors (244378114792180).

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

222120222111020 is a wasteful number, since it uses less digits than its factorization.

222120222111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092154057 (or 1092154055 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222120222111020 its reverse (20111222021222), we get a palindrome (242231444132242).

The spelling of 222120222111020 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, one hundred eleven thousand, twenty".