11111010101211 has 64 divisors (see below), whose sum is σ = 16515119085696. Its totient is φ = 6612892876800.

The previous prime is 11111010101119. The next prime is 11111010101227. The reversal of 11111010101211 is 11210101011111.

It is not a de Polignac number, because 11111010101211 - 2¹⁹ = 11111009576923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111010101011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 106791831 + ... + 106895823.

It is an arithmetic number, because the mean of its divisors is an integer number (258048735714).

Almost surely, 2^{11111010101211} is an apocalyptic number.

11111010101211 is a deficient number, since it is larger than the sum of its proper divisors (5404108984485).

11111010101211 is a wasteful number, since it uses less digits than its factorization.

11111010101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105472.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11111010101211 its reverse (11210101011111), we get a palindrome (22321111112322).

The spelling of 11111010101211 in words is "eleven trillion, one hundred eleven billion, ten million, one hundred one thousand, two hundred eleven".