222112111020 has 96 divisors (see below), whose sum is σ = 629146828800. Its totient is φ = 58544527104.

The previous prime is 222112110989. The next prime is 222112111057. The reversal of 222112111020 is 20111211222.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 1995601 + ... + 2103959.

It is an arithmetic number, because the mean of its divisors is an integer number (6553612800).

Almost surely, 2^222112111020 is an apocalyptic number.

222112111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222112111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314573414400).

222112111020 is an abundant number, since it is smaller than the sum of its proper divisors (407034717780).

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

222112111020 is a wasteful number, since it uses less digits than its factorization.

222112111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108767 (or 108765 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222112111020 its reverse (20111211222), we get a palindrome (242223322242).

The spelling of 222112111020 in words is "two hundred twenty-two billion, one hundred twelve million, one hundred eleven thousand, twenty".