1055221122384 has 400 divisors, whose sum is σ = 3625104436800. Its totient is φ = 292118814720.

The previous prime is 1055221122377. The next prime is 1055221122419. The reversal of 1055221122384 is 4832211225501.

1055221122384 is a `hidden beast` number, since 1 + 0 + 5 + 522 + 1 + 122 + 3 + 8 + 4 = 666.

It is a super-2 number, since 2×1055221122384² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17947467 + ... + 18006165.

It is an arithmetic number, because the mean of its divisors is an integer number (9062761092).

Almost surely, 2^{1055221122384} 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 1055221122384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1812552218400).

1055221122384 is an abundant number, since it is smaller than the sum of its proper divisors (2569883314416).

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

1055221122384 is a wasteful number, since it uses less digits than its factorization.

1055221122384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58840 (or 58825 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 1055221122384 its reverse (4832211225501), we get a palindrome (5887432347885).

The spelling of 1055221122384 in words is "one trillion, fifty-five billion, two hundred twenty-one million, one hundred twenty-two thousand, three hundred eighty-four".