1121571326200 has 384 divisors, whose sum is σ = 3125999923200. Its totient is φ = 370386432000.

The previous prime is 1121571326149. The next prime is 1121571326203. The reversal of 1121571326200 is 26231751211.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121571326203) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 62778469 + ... + 62796331.

It is an arithmetic number, because the mean of its divisors is an integer number (8140624800).

Almost surely, 2^{1121571326200} is an apocalyptic number.

1121571326200 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 1121571326200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562999961600).

1121571326200 is an abundant number, since it is smaller than the sum of its proper divisors (2004428597000).

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

1121571326200 is a wasteful number, since it uses less digits than its factorization.

1121571326200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17983 (or 17974 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 1121571326200 in words is "one trillion, one hundred twenty-one billion, five hundred seventy-one million, three hundred twenty-six thousand, two hundred".