1111121212 has 24 divisors (see below), whose sum is σ = 1969153200. Its totient is φ = 548524416.

The previous prime is 1111121201. The next prime is 1111121227. The reversal of 1111121212 is 2121211111.

It is a happy number.

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 = 1111121192 and 1111121201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301839 + ... + 305497.

It is an arithmetic number, because the mean of its divisors is an integer number (82048050).

Almost surely, 2^1111121212 is an apocalyptic number.

It is an amenable number.

1111121212 is a deficient number, since it is larger than the sum of its proper divisors (858031988).

1111121212 is a wasteful number, since it uses less digits than its factorization.

1111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4605 (or 4603 counting only the distinct ones).

The product of its digits is 8, while the sum is 13.

The square root of 1111121212 is about 33333.4848463223. The cubic root of 1111121212 is about 1035.7473072228.

Adding to 1111121212 its reverse (2121211111), we get a palindrome (3232332323).

It can be divided in two parts, 11111 and 21212, that multiplied together give a palindrome (235686532).

The spelling of 1111121212 in words is "one billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".