11223121022544 has 40 divisors (see below), whose sum is σ = 28993241303872. Its totient is φ = 3741017287680.

The previous prime is 11223121022543. The next prime is 11223121022563. The reversal of 11223121022544 is 44522012132211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223121022543) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8319552 + ... + 9573984.

Almost surely, 2^{11223121022544} is an apocalyptic number.

It is an amenable number.

11223121022544 is an abundant number, since it is smaller than the sum of its proper divisors (17770120281328).

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

11223121022544 is a wasteful number, since it uses less digits than its factorization.

11223121022544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440835 (or 1440829 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 11223121022544 its reverse (44522012132211), we get a palindrome (55745133154755).

The spelling of 11223121022544 in words is "eleven trillion, two hundred twenty-three billion, one hundred twenty-one million, twenty-two thousand, five hundred forty-four".