111112001211 has 4 divisors (see below), whose sum is σ = 148149334952. Its totient is φ = 74074667472.

The previous prime is 111112001191. The next prime is 111112001233. The reversal of 111112001211 is 112100211111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111112001211 - 2¹³ = 111111993019 is a prime.

It is a super-2 number, since 2×111112001211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111112001711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18518666866 + ... + 18518666871.

It is an arithmetic number, because the mean of its divisors is an integer number (37037333738).

Almost surely, 2^111112001211 is an apocalyptic number.

111112001211 is a deficient number, since it is larger than the sum of its proper divisors (37037333741).

111112001211 is an equidigital number, since it uses as much as digits as its factorization.

111112001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37037333740.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111112001211 its reverse (112100211111), we get a palindrome (223212212322).

The spelling of 111112001211 in words is "one hundred eleven billion, one hundred twelve million, one thousand, two hundred eleven".