1222200002000 has 80 divisors (see below), whose sum is σ = 2956341585600. Its totient is φ = 488704323200.

The previous prime is 1222200001999. The next prime is 1222200002017. The reversal of 1222200002000 is 2000022221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5529611 + ... + 5746389.

It is an arithmetic number, because the mean of its divisors is an integer number (36954269820).

Almost surely, 2^{1222200002000} is an apocalyptic number.

1222200002000 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 1222200002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478170792800).

1222200002000 is an abundant number, since it is smaller than the sum of its proper divisors (1734141583600).

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

1222200002000 is a wasteful number, since it uses less digits than its factorization.

1222200002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219621 (or 219605 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 1222200002000 its reverse (2000022221), we get a palindrome (1224200024221).

The spelling of 1222200002000 in words is "one trillion, two hundred twenty-two billion, two hundred million, two thousand".