1121144343420 has 96 divisors (see below), whose sum is σ = 3324723651648. Its totient is φ = 281312407552.

The previous prime is 1121144343409. The next prime is 1121144343433. The reversal of 1121144343420 is 243434411211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3855034 + ... + 4135646.

It is an arithmetic number, because the mean of its divisors is an integer number (34632538038).

Almost surely, 2^{1121144343420} is an apocalyptic number.

1121144343420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121144343420 is an abundant number, since it is smaller than the sum of its proper divisors (2203579308228).

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

1121144343420 is a wasteful number, since it uses less digits than its factorization.

1121144343420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284559 (or 284557 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 1121144343420 its reverse (243434411211), we get a palindrome (1364578754631).

The spelling of 1121144343420 in words is "one trillion, one hundred twenty-one billion, one hundred forty-four million, three hundred forty-three thousand, four hundred twenty".