101111111211 has 32 divisors (see below), whose sum is σ = 149165452800. Its totient is φ = 60411872000.

The previous prime is 101111111207. The next prime is 101111111263. The reversal of 101111111211 is 112111111101.

It is a cyclic number.

It is not a de Polignac number, because 101111111211 - 2² = 101111111207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101111111201) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 711490 + ... + 841688.

It is an arithmetic number, because the mean of its divisors is an integer number (4661420400).

Almost surely, 2^101111111211 is an apocalyptic number.

101111111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101111111211 is a deficient number, since it is larger than the sum of its proper divisors (48054341589).

101111111211 is a wasteful number, since it uses less digits than its factorization.

101111111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130547.

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

Adding to 101111111211 its reverse (112111111101), we get a palindrome (213222222312).

The spelling of 101111111211 in words is "one hundred one billion, one hundred eleven million, one hundred eleven thousand, two hundred eleven".