1201011110111 has 4 divisors (see below), whose sum is σ = 1208964826224. Its totient is φ = 1193057394000.

The previous prime is 1201011110087. The next prime is 1201011110129. The reversal of 1201011110111 is 1110111101021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1201011110111 - 2¹⁴ = 1201011093727 is a prime.

It is a super-2 number, since 2×1201011110111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201011110092 and 1201011110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201011110141) 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, 3976857830 + ... + 3976858131.

It is an arithmetic number, because the mean of its divisors is an integer number (302241206556).

Almost surely, 2^{1201011110111} is an apocalyptic number.

1201011110111 is a deficient number, since it is larger than the sum of its proper divisors (7953716113).

1201011110111 is an equidigital number, since it uses as much as digits as its factorization.

1201011110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953716112.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1201011110111 its reverse (1110111101021), we get a palindrome (2311122211132).

The spelling of 1201011110111 in words is "one trillion, two hundred one billion, eleven million, one hundred ten thousand, one hundred eleven".