1118421021354 has 96 divisors (see below), whose sum is σ = 2795040129024. Its totient is φ = 292104221760.

The previous prime is 1118421021343. The next prime is 1118421021409. The reversal of 1118421021354 is 4531201248111.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33802 + ... + 1495989.

It is an arithmetic number, because the mean of its divisors is an integer number (29115001344).

Almost surely, 2^{1118421021354} is an apocalyptic number.

1118421021354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118421021354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397520064512).

1118421021354 is an abundant number, since it is smaller than the sum of its proper divisors (1676619107670).

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

1118421021354 is a wasteful number, since it uses less digits than its factorization.

1118421021354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529932 (or 1529919 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

Adding to 1118421021354 its reverse (4531201248111), we get a palindrome (5649622269465).

The spelling of 1118421021354 in words is "one trillion, one hundred eighteen billion, four hundred twenty-one million, twenty-one thousand, three hundred fifty-four".