1022245244440 has 128 divisors (see below), whose sum is σ = 2712402806400. Its totient is φ = 339439288320.

The previous prime is 1022245244437. The next prime is 1022245244473. The reversal of 1022245244440 is 444425422201.

It is a junction number, because it is equal to n+sod(n) for n = 1022245244396 and 1022245244405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1247776 + ... + 1897744.

It is an arithmetic number, because the mean of its divisors is an integer number (21190646925).

Almost surely, 2^{1022245244440} is an apocalyptic number.

1022245244440 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 1022245244440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356201403200).

1022245244440 is an abundant number, since it is smaller than the sum of its proper divisors (1690157561960).

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

1022245244440 is a wasteful number, since it uses less digits than its factorization.

1022245244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650165 (or 650161 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

The spelling of 1022245244440 in words is "one trillion, twenty-two billion, two hundred forty-five million, two hundred forty-four thousand, four hundred forty".