1201112111011 has 8 divisors (see below), whose sum is σ = 1219502321424. Its totient is φ = 1182735523200.

The previous prime is 1201112110997. The next prime is 1201112111027. The reversal of 1201112111011 is 1101112111021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201112111011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201112110982 and 1201112111000.

It is not an unprimeable number, because it can be changed into a prime (1201112115011) 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, 3227890 + ... + 3580711.

It is an arithmetic number, because the mean of its divisors is an integer number (152437790178).

Almost surely, 2^{1201112111011} is an apocalyptic number.

1201112111011 is a deficient number, since it is larger than the sum of its proper divisors (18390210413).

1201112111011 is an equidigital number, since it uses as much as digits as its factorization.

1201112111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811301.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1201112111011 its reverse (1101112111021), we get a palindrome (2302224222032).

The spelling of 1201112111011 in words is "one trillion, two hundred one billion, one hundred twelve million, one hundred eleven thousand, eleven".