11112121101211 has 32 divisors (see below), whose sum is σ = 12282387022080. Its totient is φ = 9990038682624.

The previous prime is 11112121101199. The next prime is 11112121101223. The reversal of 11112121101211 is 11210112121111.

It is an interprime number because it is at equal distance from previous prime (11112121101199) and next prime (11112121101223).

It is not a de Polignac number, because 11112121101211 - 2²¹ = 11112119004059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11112121101911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52094271 + ... + 52307143.

It is an arithmetic number, because the mean of its divisors is an integer number (383824594440).

Almost surely, 2^{11112121101211} is an apocalyptic number.

11112121101211 is a deficient number, since it is larger than the sum of its proper divisors (1170265920869).

11112121101211 is a wasteful number, since it uses less digits than its factorization.

11112121101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213495.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11112121101211 its reverse (11210112121111), we get a palindrome (22322233222322).

The spelling of 11112121101211 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, one hundred one thousand, two hundred eleven".