1100123212 has 18 divisors (see below), whose sum is σ = 2012563868. Its totient is φ = 526144872.

The previous prime is 1100123191. The next prime is 1100123221. The reversal of 1100123212 is 2123210011.

It is a junction number, because it is equal to n+sod(n) for n = 1100123192 and 1100123201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 257838 + ... + 262069.

Almost surely, 2^1100123212 is an apocalyptic number.

It is an amenable number.

1100123212 is a deficient number, since it is larger than the sum of its proper divisors (912440656).

1100123212 is a wasteful number, since it uses less digits than its factorization.

1100123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519957 (or 519932 counting only the distinct ones).

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

The square root of 1100123212 is about 33168.1053423315. The cubic root of 1100123212 is about 1032.3186562288.

Adding to 1100123212 its reverse (2123210011), we get a palindrome (3223333223).

The spelling of 1100123212 in words is "one billion, one hundred million, one hundred twenty-three thousand, two hundred twelve".