1121201130100 has 72 divisors (see below), whose sum is σ = 2456295564800. Its totient is φ = 444190780800.

The previous prime is 1121201130079. The next prime is 1121201130113. The reversal of 1121201130100 is 10311021211.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 29618185 + ... + 29656015.

Almost surely, 2^{1121201130100} is an apocalyptic number.

1121201130100 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 1121201130100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1228147782400).

1121201130100 is an abundant number, since it is smaller than the sum of its proper divisors (1335094434700).

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

1121201130100 is a wasteful number, since it uses less digits than its factorization.

1121201130100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40673 (or 40666 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1121201130100 its reverse (10311021211), we get a palindrome (1131512151311).

The spelling of 1121201130100 in words is "one trillion, one hundred twenty-one billion, two hundred one million, one hundred thirty thousand, one hundred".