1222089526944 has 864 divisors, whose sum is σ = 4508712621504. Its totient is φ = 321670103040.

The previous prime is 1222089526937. The next prime is 1222089526969. The reversal of 1222089526944 is 4496259802221.

1222089526944 is a `hidden beast` number, since 1 + 2 + 2 + 20 + 8 + 9 + 526 + 94 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 143 ways as a sum of consecutive naturals, for example, 245742442 + ... + 245747414.

It is an arithmetic number, because the mean of its divisors is an integer number (5218417386).

Almost surely, 2^{1222089526944} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222089526944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254356310752).

1222089526944 is an abundant number, since it is smaller than the sum of its proper divisors (3286623094560).

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

1222089526944 is a wasteful number, since it uses less digits than its factorization.

1222089526944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 1222089526944 in words is "one trillion, two hundred twenty-two billion, eighty-nine million, five hundred twenty-six thousand, nine hundred forty-four".