11112120212 has 24 divisors (see below), whose sum is σ = 19605385800. Its totient is φ = 5510691200.

The previous prime is 11112120209. The next prime is 11112120233. The reversal of 11112120212 is 21202121111.

It can be written as a sum of positive squares in 4 ways, for example, as 3646468996 + 7465651216 = 60386^2 + 86404^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 404498 + ... + 431094.

It is an arithmetic number, because the mean of its divisors is an integer number (816891075).

Almost surely, 2^11112120212 is an apocalyptic number.

It is an amenable number.

11112120212 is a deficient number, since it is larger than the sum of its proper divisors (8493265588).

11112120212 is a wasteful number, since it uses less digits than its factorization.

11112120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27451 (or 27449 counting only the distinct ones).

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

Adding to 11112120212 its reverse (21202121111), we get a palindrome (32314241323).

It can be divided in two parts, 1111 and 2120212, that multiplied together give a palindrome (2355555532).

The spelling of 11112120212 in words is "eleven billion, one hundred twelve million, one hundred twenty thousand, two hundred twelve".