1000222000000 has 112 divisors (see below), whose sum is σ = 2490760305360. Its totient is φ = 400088000000.

The previous prime is 1000221999991. The next prime is 1000222000027. The reversal of 1000222000000 is 2220001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1749945 + ... + 2250055.

Almost surely, 2^{1000222000000} is an apocalyptic number.

1000222000000 is a gapful number since it is divisible by the number (10) 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 1000222000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245380152680).

1000222000000 is an abundant number, since it is smaller than the sum of its proper divisors (1490538305360).

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

1000222000000 is an frugal number, since it uses more digits than its factorization.

1000222000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500155 (or 500118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 1000222000000 its reverse (2220001), we get a palindrome (1000224220001).

The spelling of 1000222000000 in words is "one trillion, two hundred twenty-two million", and thus it is an aban number.