1222222222000 has 160 divisors (see below), whose sum is σ = 3187093762944. Its totient is φ = 450654336000.

The previous prime is 1222222221943. The next prime is 1222222222031. The reversal of 1222222222000 is 2222222221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18869670 + ... + 18934330.

Almost surely, 2^{1222222222000} is an apocalyptic number.

1222222222000 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 1222222222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593546881472).

1222222222000 is an abundant number, since it is smaller than the sum of its proper divisors (1964871540944).

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

1222222222000 is a wasteful number, since it uses less digits than its factorization.

1222222222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65424 (or 65408 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 1222222222000 its reverse (2222222221), we get a palindrome (1224444444221).

The spelling of 1222222222000 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand".