222112220211020 has 24 divisors (see below), whose sum is σ = 466435968162864. Its totient is φ = 88844829852096.

The previous prime is 222112220211017. The next prime is 222112220211029. The reversal of 222112220211020 is 20112022211222.

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 = 222112220210983 and 222112220211001.

It is not an unprimeable number, because it can be changed into a prime (222112220211029) by changing a digit.

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, 40978259 + ... + 46080821.

It is an arithmetic number, because the mean of its divisors is an integer number (19434832006786).

Almost surely, 2^{222112220211020} is an apocalyptic number.

222112220211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222112220211020 is an abundant number, since it is smaller than the sum of its proper divisors (244323747951844).

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

222112220211020 is a wasteful number, since it uses less digits than its factorization.

222112220211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279049 (or 7279047 counting only the distinct ones).

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

Adding to 222112220211020 its reverse (20112022211222), we get a palindrome (242224242422242).

The spelling of 222112220211020 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred twenty million, two hundred eleven thousand, twenty".