1123122131100 has 108 divisors (see below), whose sum is σ = 3555219300360. Its totient is φ = 296533872000.

The previous prime is 1123122131083. The next prime is 1123122131101. The reversal of 1123122131100 is 11312213211.

It is a super-2 number, since 2×1123122131100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123122131101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6086890 + ... + 6268689.

Almost surely, 2^{1123122131100} is an apocalyptic number.

1123122131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123122131100 is an abundant number, since it is smaller than the sum of its proper divisors (2432097169260).

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

1123122131100 is a wasteful number, since it uses less digits than its factorization.

1123122131100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12355700 (or 12355690 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1123122131100 its reverse (11312213211), we get a palindrome (1134434344311).

The spelling of 1123122131100 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-two million, one hundred thirty-one thousand, one hundred".