1209222456000 has 1344 divisors, whose sum is σ = 4605129809280. Its totient is φ = 277696512000.

The previous prime is 1209222455989. The next prime is 1209222456073. The reversal of 1209222456000 is 6542229021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11093783946 + ... + 11093784054.

It is an arithmetic number, because the mean of its divisors is an integer number (3426435870).

Almost surely, 2^{1209222456000} is an apocalyptic number.

1209222456000 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 1209222456000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2302564904640).

1209222456000 is an abundant number, since it is smaller than the sum of its proper divisors (3395907353280).

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

1209222456000 is a wasteful number, since it uses less digits than its factorization.

1209222456000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 1209222456000 in words is "one trillion, two hundred nine billion, two hundred twenty-two million, four hundred fifty-six thousand".