111211122011 has 8 divisors (see below), whose sum is σ = 121336578048. Its totient is φ = 101088225000.

The previous prime is 111211121977. The next prime is 111211122017. The reversal of 111211122011 is 110221112111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111211122011 - 2¹⁰ = 111211120987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548315 + ... + 723236.

It is an arithmetic number, because the mean of its divisors is an integer number (15167072256).

Almost surely, 2^111211122011 is an apocalyptic number.

111211122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111211122011 is a deficient number, since it is larger than the sum of its proper divisors (10125456037).

111211122011 is a wasteful number, since it uses less digits than its factorization.

111211122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279513.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111211122011 its reverse (110221112111), we get a palindrome (221432234122).

The spelling of 111211122011 in words is "one hundred eleven billion, two hundred eleven million, one hundred twenty-two thousand, eleven".