222111102120 has 256 divisors, whose sum is σ = 716362721280. Its totient is φ = 54948326400.

The previous prime is 222111102107. The next prime is 222111102131. The reversal of 222111102120 is 21201111222.

It is a super-2 number, since 2×222111102120² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 222111102120.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33798435 + ... + 33805005.

It is an arithmetic number, because the mean of its divisors is an integer number (2798291880).

Almost surely, 2^222111102120 is an apocalyptic number.

222111102120 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 222111102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358181360640).

222111102120 is an abundant number, since it is smaller than the sum of its proper divisors (494251619160).

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

222111102120 is a wasteful number, since it uses less digits than its factorization.

222111102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976 (or 6972 counting only the distinct ones).

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

Adding to 222111102120 its reverse (21201111222), we get a palindrome (243312213342).

It can be divided in two parts, 222111102 and 120, that added together give a palindrome (222111222).

The spelling of 222111102120 in words is "two hundred twenty-two billion, one hundred eleven million, one hundred two thousand, one hundred twenty".