1121312124 has 18 divisors (see below), whose sum is σ = 2834427960. Its totient is φ = 373770696.

The previous prime is 1121312117. The next prime is 1121312141. The reversal of 1121312124 is 4212131211.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1121312097 and 1121312106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15573744 + ... + 15573815.

It is an arithmetic number, because the mean of its divisors is an integer number (157468220).

Almost surely, 2^1121312124 is an apocalyptic number.

It is an amenable number.

1121312124 is an abundant number, since it is smaller than the sum of its proper divisors (1713115836).

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

1121312124 is a wasteful number, since it uses less digits than its factorization.

1121312124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31147569 (or 31147564 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1121312124 is about 33485.9989249238. The cubic root of 1121312124 is about 1038.9042094904.

Adding to 1121312124 its reverse (4212131211), we get a palindrome (5333443335).

The spelling of 1121312124 in words is "one billion, one hundred twenty-one million, three hundred twelve thousand, one hundred twenty-four".