1121033021100 has 36 divisors (see below), whose sum is σ = 3243522208584. Its totient is φ = 298942138880.

The previous prime is 1121033021093. The next prime is 1121033021149. The reversal of 1121033021100 is 11203301211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121033021100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1868388069 + ... + 1868388668.

Almost surely, 2^{1121033021100} is an apocalyptic number.

1121033021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121033021100 is an abundant number, since it is smaller than the sum of its proper divisors (2122489187484).

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

1121033021100 is a wasteful number, since it uses less digits than its factorization.

1121033021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736776754 (or 3736776747 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1121033021100 its reverse (11203301211), we get a palindrome (1132236322311).

It can be divided in two parts, 11210330 and 21100, that added together give a triangular number (11231430 = T₄₇₃₉).

The spelling of 1121033021100 in words is "one trillion, one hundred twenty-one billion, thirty-three million, twenty-one thousand, one hundred".