2111121212 has 6 divisors (see below), whose sum is σ = 3694462128. Its totient is φ = 1055560604.

The previous prime is 2111121209. The next prime is 2111121239. The reversal of 2111121212 is 2121211112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263890148 + ... + 263890155.

It is an arithmetic number, because the mean of its divisors is an integer number (615743688).

Almost surely, 2^2111121212 is an apocalyptic number.

It is an amenable number.

2111121212 is a deficient number, since it is larger than the sum of its proper divisors (1583340916).

2111121212 is a wasteful number, since it uses less digits than its factorization.

2111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527780307 (or 527780305 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 2111121212 is about 45946.9390928275. The cubic root of 2111121212 is about 1282.8357563846.

Adding to 2111121212 its reverse (2121211112), we get a palindrome (4232332324).

The spelling of 2111121212 in words is "two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".