1201011122111 has 4 divisors (see below), whose sum is σ = 1201016474592. Its totient is φ = 1201005769632.

The previous prime is 1201011122099. The next prime is 1201011122131. The reversal of 1201011122111 is 1112211101021.

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 1201011122111 - 2³⁰ = 1199937380287 is a prime.

It is a super-3 number, since 3×1201011122111³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201011122131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2324231 + ... + 2793576.

It is an arithmetic number, because the mean of its divisors is an integer number (300254118648).

Almost surely, 2^{1201011122111} is an apocalyptic number.

1201011122111 is a deficient number, since it is larger than the sum of its proper divisors (5352481).

1201011122111 is an equidigital number, since it uses as much as digits as its factorization.

1201011122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352480.

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

Adding to 1201011122111 its reverse (1112211101021), we get a palindrome (2313222223132).

The spelling of 1201011122111 in words is "one trillion, two hundred one billion, eleven million, one hundred twenty-two thousand, one hundred eleven".