1123011612 has 36 divisors (see below), whose sum is σ = 2870627760. Its totient is φ = 370130112.

The previous prime is 1123011601. The next prime is 1123011641. The reversal of 1123011612 is 2161103211.

1123011612 is a `hidden beast` number, since 1 + 12 + 30 + 11 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1123011612² = 2522310161373677088, which 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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172048 + ... + 178455.

It is an arithmetic number, because the mean of its divisors is an integer number (79739660).

Almost surely, 2^1123011612 is an apocalyptic number.

1123011612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123011612 is an abundant number, since it is smaller than the sum of its proper divisors (1747616148).

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

1123011612 is a wasteful number, since it uses less digits than its factorization.

1123011612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350602 (or 350597 counting only the distinct ones).

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

The square root of 1123011612 is about 33511.3654153333. The cubic root of 1123011612 is about 1039.4288074002.

Adding to 1123011612 its reverse (2161103211), we get a palindrome (3284114823).

The spelling of 1123011612 in words is "one billion, one hundred twenty-three million, eleven thousand, six hundred twelve".