222111001000 has 256 divisors, whose sum is σ = 649227571200. Its totient is φ = 69359616000.

The previous prime is 222111000883. The next prime is 222111001003. The reversal of 222111001000 is 100111222.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (222111001003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3658896 + ... + 3719104.

It is an arithmetic number, because the mean of its divisors is an integer number (2536045200).

Almost surely, 2^222111001000 is an apocalyptic number.

222111001000 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 222111001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324613785600).

222111001000 is an abundant number, since it is smaller than the sum of its proper divisors (427116570200).

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

222111001000 is a wasteful number, since it uses less digits than its factorization.

222111001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60285 (or 60271 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 222111001000 its reverse (100111222), we get a palindrome (222211112222).

The spelling of 222111001000 in words is "two hundred twenty-two billion, one hundred eleven million, one thousand".