1122281384 has 64 divisors (see below), whose sum is σ = 2551046400. Its totient is φ = 451851264.

The previous prime is 1122281383. The next prime is 1122281393. The reversal of 1122281384 is 4831822211.

It is a self number, because there is not a number n which added to its sum of digits gives 1122281384.

It is not an unprimeable number, because it can be changed into a prime (1122281383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011422 + ... + 1012530.

It is an arithmetic number, because the mean of its divisors is an integer number (39860100).

Almost surely, 2^1122281384 is an apocalyptic number.

1122281384 is a gapful number since it is divisible by the number (14) 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 1122281384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275523200).

1122281384 is an abundant number, since it is smaller than the sum of its proper divisors (1428765016).

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

1122281384 is a wasteful number, since it uses less digits than its factorization.

1122281384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 2198 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 1122281384 is about 33500.4684146356. The cubic root of 1122281384 is about 1039.2034655350.

The spelling of 1122281384 in words is "one billion, one hundred twenty-two million, two hundred eighty-one thousand, three hundred eighty-four".