1124120220 has 24 divisors (see below), whose sum is σ = 3147536784. Its totient is φ = 299765376.

The previous prime is 1124120213. The next prime is 1124120227. The reversal of 1124120220 is 220214211.

It is an interprime number because it is at equal distance from previous prime (1124120213) and next prime (1124120227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1124120220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1124120227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9367609 + ... + 9367728.

It is an arithmetic number, because the mean of its divisors is an integer number (131147366).

Almost surely, 2^1124120220 is an apocalyptic number.

1124120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1124120220 is an abundant number, since it is smaller than the sum of its proper divisors (2023416564).

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

1124120220 is a wasteful number, since it uses less digits than its factorization.

1124120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18735349 (or 18735347 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1124120220 is about 33527.9021115250. The cubic root of 1124120220 is about 1039.7707273195.

Adding to 1124120220 its reverse (220214211), we get a palindrome (1344334431).

The spelling of 1124120220 in words is "one billion, one hundred twenty-four million, one hundred twenty thousand, two hundred twenty".