1121123233100 has 144 divisors (see below), whose sum is σ = 2693819001216. Its totient is φ = 402361344000.

The previous prime is 1121123233093. The next prime is 1121123233127. The reversal of 1121123233100 is 13323211211.

It is a happy number.

It is a super-2 number, since 2×1121123233100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 14405492 + ... + 14483108.

Almost surely, 2^{1121123233100} is an apocalyptic number.

1121123233100 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 1121123233100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346909500608).

1121123233100 is an abundant number, since it is smaller than the sum of its proper divisors (1572695768116).

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

1121123233100 is a wasteful number, since it uses less digits than its factorization.

1121123233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77956 (or 77949 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1121123233100 its reverse (13323211211), we get a palindrome (1134446444311).

The spelling of 1121123233100 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred thirty-three thousand, one hundred".