1123100212 has 48 divisors (see below), whose sum is σ = 2216092032. Its totient is φ = 494144640.

The previous prime is 1123100201. The next prime is 1123100221. The reversal of 1123100212 is 2120013211.

It is a super-2 number, since 2×1123100212² = 2522708172388889888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1123100192 and 1123100201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394458 + ... + 397294.

It is an arithmetic number, because the mean of its divisors is an integer number (46168584).

Almost surely, 2^1123100212 is an apocalyptic number.

It is an amenable number.

1123100212 is a deficient number, since it is larger than the sum of its proper divisors (1092991820).

1123100212 is a wasteful number, since it uses less digits than its factorization.

1123100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208 (or 3206 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1123100212 is about 33512.6873288312. The cubic root of 1123100212 is about 1039.4561419262.

Adding to 1123100212 its reverse (2120013211), we get a palindrome (3243113423).

The spelling of 1123100212 in words is "one billion, one hundred twenty-three million, one hundred thousand, two hundred twelve".