1121424342220 has 192 divisors, whose sum is σ = 2919343795200. Its totient is φ = 352358802432.

The previous prime is 1121424342217. The next prime is 1121424342239. The reversal of 1121424342220 is 222434241211.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 439945506 + ... + 439948054.

It is an arithmetic number, because the mean of its divisors is an integer number (15204915600).

Almost surely, 2^{1121424342220} is an apocalyptic number.

1121424342220 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 1121424342220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459671897600).

1121424342220 is an abundant number, since it is smaller than the sum of its proper divisors (1797919452980).

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

1121424342220 is a wasteful number, since it uses less digits than its factorization.

1121424342220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4222 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1121424342220 its reverse (222434241211), we get a palindrome (1343858583431).

The spelling of 1121424342220 in words is "one trillion, one hundred twenty-one billion, four hundred twenty-four million, three hundred forty-two thousand, two hundred twenty".