1121244442420 has 24 divisors (see below), whose sum is σ = 2371552999200. Its totient is φ = 445271173152.

The previous prime is 1121244442403. The next prime is 1121244442421. The reversal of 1121244442420 is 242444421211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121244442421) 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, 201659890 + ... + 201665449.

It is an arithmetic number, because the mean of its divisors is an integer number (98814708300).

Almost surely, 2^{1121244442420} is an apocalyptic number.

1121244442420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121244442420 is an abundant number, since it is smaller than the sum of its proper divisors (1250308556780).

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

1121244442420 is a wasteful number, since it uses less digits than its factorization.

1121244442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403325487 (or 403325485 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 1121244442420 its reverse (242444421211), we get a palindrome (1363688863631).

The spelling of 1121244442420 in words is "one trillion, one hundred twenty-one billion, two hundred forty-four million, four hundred forty-two thousand, four hundred twenty".